diff --git a/src/core/core-eval.c b/src/core/core-eval.c
index 4adf2c54f..fcddfc9f3 100644
--- a/src/core/core-eval.c
+++ b/src/core/core-eval.c
@@ -1422,6 +1422,7 @@ eval_string_hdata (const char *text, struct t_eval_context *eval_context)
     void *pointer;
     struct t_hdata *hdata;
     int rc;
+    unsigned long ptr;
 
     value = NULL;
     hdata_name = NULL;
@@ -1473,9 +1474,10 @@ eval_string_hdata (const char *text, struct t_eval_context *eval_context)
     {
         if (strncmp (pointer_name, "0x", 2) == 0)
         {
-            rc = sscanf (pointer_name, "%p", &pointer);
+            rc = sscanf (pointer_name, "%lx", &ptr);
             if ((rc != EOF) && (rc != 0))
             {
+                pointer = (void *)ptr;
                 if (!hdata_check_pointer (hdata, NULL, pointer))
                     goto end;
             }
diff --git a/src/core/core-hdata.c b/src/core/core-hdata.c
index fe39afbce..03532d1d4 100644
--- a/src/core/core-hdata.c
+++ b/src/core/core-hdata.c
@@ -1246,10 +1246,10 @@ hdata_set (struct t_hdata *hdata, void *pointer, const char *name,
            const char *value)
 {
     struct t_hdata_var *var;
-    void *ptr;
     char **ptr_string, *error;
     long number;
     long long number_longlong;
+    unsigned long ptr;
     int rc;
 
     if (!hdata->update_pending)
@@ -1309,10 +1309,10 @@ hdata_set (struct t_hdata *hdata, void *pointer, const char *name,
         case WEECHAT_HDATA_POINTER:
             if (value)
             {
-                rc = sscanf (value, "%p", &ptr);
+                rc = sscanf (value, "%lx", &ptr);
                 if ((rc != EOF) && (rc != 0))
                 {
-                    *((void **)(pointer + var->offset)) = ptr;
+                    *((void **)(pointer + var->offset)) = (void *)ptr;
                     return 1;
                 }
             }
diff --git a/src/gui/gui-bar-item.c b/src/gui/gui-bar-item.c
index 2822d99c0..de7944abc 100644
--- a/src/gui/gui-bar-item.c
+++ b/src/gui/gui-bar-item.c
@@ -2150,6 +2150,7 @@ gui_bar_item_focus_buffer_nicklist_cb (const void *pointer,
     struct t_gui_nick_group *ptr_group;
     struct t_gui_nick *ptr_nick;
     int i, rc, bar_item_line;
+    unsigned long value;
     const char *str_window, *str_buffer, *str_bar_item_line;
     struct t_gui_window *window;
     struct t_gui_buffer *buffer;
@@ -2167,9 +2168,10 @@ gui_bar_item_focus_buffer_nicklist_cb (const void *pointer,
     str_window = hashtable_get (info, "_window");
     if (str_window && str_window[0])
     {
-        rc = sscanf (str_window, "%p", &window);
+        rc = sscanf (str_window, "%lx", &value);
         if ((rc == EOF) || (rc == 0))
             return NULL;
+        window = (struct t_gui_window *)value;
     }
     else
     {
@@ -2184,9 +2186,10 @@ gui_bar_item_focus_buffer_nicklist_cb (const void *pointer,
     str_buffer = hashtable_get (info, "_buffer");
     if (str_buffer && str_buffer[0])
     {
-        rc = sscanf (str_buffer, "%p", &buffer);
+        rc = sscanf (str_buffer, "%lx", &value);
         if ((rc == EOF) || (rc == 0))
             return NULL;
+        buffer = (struct t_gui_buffer *)value;
     }
     if (!buffer)
         return NULL;
diff --git a/src/gui/gui-chat.c b/src/gui/gui-chat.c
index 7522efbc5..288b363b4 100644
--- a/src/gui/gui-chat.c
+++ b/src/gui/gui-chat.c
@@ -1398,6 +1398,7 @@ gui_chat_hsignal_quote_line_cb (const void *pointer, void *data,
 {
     const char *ptr_date, *ptr_date_usec, *line, *prefix, *ptr_prefix, *message;
     long long number;
+    unsigned long value;
     struct timeval tv;
     struct t_gui_line *ptr_line;
     int is_nick, rc;
@@ -1442,9 +1443,10 @@ gui_chat_hsignal_quote_line_cb (const void *pointer, void *data,
     line = hashtable_get (hashtable, "_chat_line");
     if (line && line[0])
     {
-        rc = sscanf (line, "%p", &ptr_line);
+        rc = sscanf (line, "%lx", &value);
         if ((rc != EOF) && (rc != 0))
         {
+            ptr_line = (struct t_gui_line *)value;
             if (gui_line_search_tag_starting_with (ptr_line, "prefix_nick"))
                 is_nick = 1;
         }
diff --git a/src/gui/gui-history.c b/src/gui/gui-history.c
index 3b66537ac..3849ed397 100644
--- a/src/gui/gui-history.c
+++ b/src/gui/gui-history.c
@@ -358,6 +358,7 @@ gui_history_hdata_history_update_cb (void *data,
     struct t_gui_history *ptr_history;
     struct t_gui_buffer *ptr_buffer;
     const char *text, *buffer;
+    unsigned long value;
     int rc;
 
     /* make C compiler happy */
@@ -386,9 +387,9 @@ gui_history_hdata_history_update_cb (void *data,
             buffer = hashtable_get (hashtable, "buffer");
             if (buffer)
             {
-                rc = sscanf (buffer, "%p", &ptr_buffer);
-                if ((rc == EOF) || (rc == 0))
-                    ptr_buffer = NULL;
+                rc = sscanf (buffer, "%lx", &value);
+                if ((rc != EOF) && (rc != 0))
+                    ptr_buffer = (struct t_gui_buffer *)value;
             }
         }
         if (ptr_buffer)
diff --git a/src/gui/gui-key.c b/src/gui/gui-key.c
index a590958f9..978b3c204 100644
--- a/src/gui/gui-key.c
+++ b/src/gui/gui-key.c
@@ -2044,6 +2044,7 @@ gui_key_focus_command (const char *key, int context,
 {
     struct t_gui_key *ptr_key;
     int matching, debug, rc;
+    unsigned long value;
     char *command, **commands, **ptr_command;
     const char *str_buffer;
     struct t_hashtable *hashtable;
@@ -2101,9 +2102,9 @@ gui_key_focus_command (const char *key, int context,
         str_buffer = hashtable_get (hashtable, "_buffer");
         if (str_buffer && str_buffer[0])
         {
-            rc = sscanf (str_buffer, "%p", &ptr_buffer);
-            if ((rc == EOF) || (rc == 0))
-                ptr_buffer = gui_current_window->buffer;
+            rc = sscanf (str_buffer, "%lx", &value);
+            if ((rc != EOF) && (rc != 0))
+                ptr_buffer = (struct t_gui_buffer *)value;
         }
         if (!ptr_buffer)
             continue;
diff --git a/src/gui/gui-line.c b/src/gui/gui-line.c
index 3760d5ce9..a90db4f43 100644
--- a/src/gui/gui-line.c
+++ b/src/gui/gui-line.c
@@ -1673,6 +1673,7 @@ gui_line_hook_update (struct t_gui_line *line,
 {
     const char *ptr_value, *ptr_value2;
     struct t_gui_buffer *ptr_buffer;
+    unsigned long value_pointer;
     long value;
     char *error, *new_message, *pos_newline;
     int rc, tags_updated, notify_level_updated, highlight_updated;
@@ -1706,7 +1707,8 @@ gui_line_hook_update (struct t_gui_line *line,
             {
                 if ((ptr_value2[0] == '0') && (ptr_value2[1] == 'x'))
                 {
-                    rc = sscanf (ptr_value2, "%p", &ptr_buffer);
+                    rc = sscanf (ptr_value2 + 2, "%lx", &value_pointer);
+                    ptr_buffer = (struct t_gui_buffer *)value_pointer;
                     if ((rc != EOF) && (rc >= 1)
                         && gui_chat_buffer_valid (ptr_buffer, line->data->buffer->type))
                     {
diff --git a/src/plugins/buflist/buflist-mouse.c b/src/plugins/buflist/buflist-mouse.c
index 899fda0b5..a552d0424 100644
--- a/src/plugins/buflist/buflist-mouse.c
+++ b/src/plugins/buflist/buflist-mouse.c
@@ -335,6 +335,7 @@ buflist_hsignal_cb (const void *pointer, void *data, const char *signal,
     struct t_gui_buffer *ptr_buffer;
     char *error, str_command[1024];
     long number, number2;
+    unsigned long value;
     int rc, current_buffer_number;
 
     /* make C compiler happy */
@@ -354,9 +355,10 @@ buflist_hsignal_cb (const void *pointer, void *data, const char *signal,
         return WEECHAT_RC_OK;
     }
 
-    rc = sscanf (ptr_pointer, "%p", &ptr_buffer);
+    rc = sscanf (ptr_pointer, "%lx", &value);
     if ((rc == EOF) || (rc == 0))
         return WEECHAT_RC_OK;
+    ptr_buffer = (struct t_gui_buffer *)value;
 
     error = NULL;
     number = strtol (ptr_number, &error, 10);
diff --git a/src/plugins/fset/fset-mouse.c b/src/plugins/fset/fset-mouse.c
index b52d70f5f..09c3c8063 100644
--- a/src/plugins/fset/fset-mouse.c
+++ b/src/plugins/fset/fset-mouse.c
@@ -43,6 +43,7 @@ fset_mouse_focus_cb (const void *pointer, void *data, struct t_hashtable *info)
 {
     const char *buffer;
     int rc, format_number;
+    unsigned long value;
     struct t_gui_buffer *ptr_buffer;
     long y, option_index;
     char *error, str_value[128];
@@ -59,10 +60,12 @@ fset_mouse_focus_cb (const void *pointer, void *data, struct t_hashtable *info)
     if (!buffer)
         return info;
 
-    rc = sscanf (buffer, "%p", &ptr_buffer);
+    rc = sscanf (buffer, "%lx", &value);
     if ((rc == EOF) || (rc == 0))
         return info;
 
+    ptr_buffer = (struct t_gui_buffer *)value;
+
     if (!ptr_buffer || (ptr_buffer != fset_buffer))
         return info;
 
@@ -186,6 +189,7 @@ fset_mouse_hsignal_cb (const void *pointer, void *data, const char *signal,
     const char *ptr_key, *ptr_fset_option_pointer;
     char str_command[1024];
     struct t_fset_option *ptr_fset_option;
+    unsigned long value;
     int rc, distance, num_options, min_y, max_y, i;
     int chat_line_x, chat_line_x2, y, y2, chat_line_y, chat_line_y2;
     int option_index, option_index2, index1, index2;
@@ -204,9 +208,10 @@ fset_mouse_hsignal_cb (const void *pointer, void *data, const char *signal,
     if (!ptr_key || !ptr_fset_option_pointer)
         return WEECHAT_RC_OK;
 
-    rc = sscanf (ptr_fset_option_pointer, "%p", &ptr_fset_option);
+    rc = sscanf (ptr_fset_option_pointer, "%lx", &value);
     if ((rc == EOF) || (rc == 0))
         return WEECHAT_RC_OK;
+    ptr_fset_option = (struct t_fset_option *)value;
     if (!ptr_fset_option)
         return WEECHAT_RC_OK;
 
diff --git a/src/plugins/irc/irc-bar-item.c b/src/plugins/irc/irc-bar-item.c
index 11127aa5b..932438f06 100644
--- a/src/plugins/irc/irc-bar-item.c
+++ b/src/plugins/irc/irc-bar-item.c
@@ -626,6 +626,7 @@ struct t_hashtable *
 irc_bar_item_focus_buffer_nicklist (const void *pointer, void *data,
                                     struct t_hashtable *info)
 {
+    unsigned long value;
     int rc;
     struct t_gui_buffer *buffer;
     struct t_irc_nick *ptr_nick;
@@ -636,10 +637,12 @@ irc_bar_item_focus_buffer_nicklist (const void *pointer, void *data,
     if (!str_buffer || !str_buffer[0])
         return NULL;
 
-    rc = sscanf (str_buffer, "%p", &buffer);
+    rc = sscanf (str_buffer, "%lx", &value);
     if ((rc == EOF) || (rc == 0))
         return NULL;
 
+    buffer = (struct t_gui_buffer *)value;
+
     IRC_BUFFER_GET_SERVER_CHANNEL(buffer);
 
     /* make C compiler happy */
diff --git a/src/plugins/irc/irc-list.c b/src/plugins/irc/irc-list.c
index a4c7f3b9f..f60017cd4 100644
--- a/src/plugins/irc/irc-list.c
+++ b/src/plugins/irc/irc-list.c
@@ -1313,6 +1313,7 @@ irc_list_mouse_hsignal_cb (const void *pointer, void *data, const char *signal,
 {
     const char *ptr_key, *ptr_chat_line_y, *ptr_buffer_pointer;
     struct t_gui_buffer *ptr_buffer;
+    unsigned long value;
     char str_command[1024];
     int rc;
 
@@ -1328,9 +1329,10 @@ irc_list_mouse_hsignal_cb (const void *pointer, void *data, const char *signal,
     if (!ptr_key || !ptr_buffer_pointer || !ptr_chat_line_y)
         return WEECHAT_RC_OK;
 
-    rc = sscanf (ptr_buffer_pointer, "%p", &ptr_buffer);
+    rc = sscanf (ptr_buffer_pointer, "%lx", &value);
     if ((rc == EOF) || (rc == 0))
         return WEECHAT_RC_OK;
+    ptr_buffer = (struct t_gui_buffer *)value;
     if (!ptr_buffer)
         return WEECHAT_RC_OK;
 
diff --git a/src/plugins/logger/logger-info.c b/src/plugins/logger/logger-info.c
index d70c34459..5560fb85a 100644
--- a/src/plugins/logger/logger-info.c
+++ b/src/plugins/logger/logger-info.c
@@ -40,6 +40,7 @@ logger_info_log_file_cb (const void *pointer, void *data,
                          const char *arguments)
 {
     int rc;
+    unsigned long value;
     struct t_gui_buffer *buffer;
     struct t_logger_buffer *logger_buffer;
 
@@ -54,20 +55,16 @@ logger_info_log_file_cb (const void *pointer, void *data,
     buffer = NULL;
     if (strncmp (arguments, "0x", 2) == 0)
     {
-        rc = sscanf (arguments, "%p", &buffer);
-        if ((rc != EOF) && (rc != 0) && buffer)
+        rc = sscanf (arguments, "%lx", &value);
+        if ((rc != EOF) && (rc != 0) && value)
         {
-            if (!weechat_hdata_check_pointer (weechat_hdata_get ("buffer"),
-                                              NULL,
-                                              buffer))
+            if (weechat_hdata_check_pointer (weechat_hdata_get ("buffer"),
+                                             NULL,
+                                             (struct t_gui_buffer *)value))
             {
-                buffer = NULL;
+                buffer = (struct t_gui_buffer *)value;
             }
         }
-        else
-        {
-            buffer = NULL;
-        }
     }
     else
     {
diff --git a/src/plugins/plugin-script.c b/src/plugins/plugin-script.c
index 533d17428..d40f0bca7 100644
--- a/src/plugins/plugin-script.c
+++ b/src/plugins/plugin-script.c
@@ -407,7 +407,7 @@ plugin_script_str2ptr (struct t_weechat_plugin *weechat_plugin,
                        const char *script_name, const char *function_name,
                        const char *str_pointer)
 {
-    void *pointer;
+    unsigned long value;
     int rc;
     struct t_gui_buffer *ptr_buffer;
 
@@ -417,9 +417,9 @@ plugin_script_str2ptr (struct t_weechat_plugin *weechat_plugin,
     if ((str_pointer[0] != '0') || (str_pointer[1] != 'x'))
         goto invalid;
 
-    rc = sscanf (str_pointer, "%p", &pointer);
+    rc = sscanf (str_pointer + 2, "%lx", &value);
     if ((rc != EOF) && (rc >= 1))
-        return pointer;
+        return (void *)value;
 
 invalid:
     if ((weechat_plugin->debug >= 1) && script_name && function_name)
diff --git a/src/plugins/relay/weechat/relay-weechat-msg.c b/src/plugins/relay/weechat/relay-weechat-msg.c
index b622726d9..e4a98fc7d 100644
--- a/src/plugins/relay/weechat/relay-weechat-msg.c
+++ b/src/plugins/relay/weechat/relay-weechat-msg.c
@@ -590,6 +590,7 @@ relay_weechat_msg_add_hdata (struct t_relay_weechat_msg *msg,
     char *path_returned;
     const char *hdata_name, *array_size;
     void *pointer, **path_pointers;
+    unsigned long value;
     int rc, num_keys, num_path, i, type, pos_count, count, rc_sscanf;
     uint32_t count32;
 
@@ -630,9 +631,10 @@ relay_weechat_msg_add_hdata (struct t_relay_weechat_msg *msg,
         pos[0] = '\0';
     if (strncmp (list_path[0], "0x", 2) == 0)
     {
-        rc_sscanf = sscanf (list_path[0], "%p", &pointer);
+        rc_sscanf = sscanf (list_path[0], "%lx", &value);
         if ((rc_sscanf != EOF) && (rc_sscanf != 0))
         {
+            pointer = (void *)value;
             if (!weechat_hdata_check_pointer (ptr_hdata_head, NULL, pointer))
             {
                 if (weechat_relay_plugin->debug >= 1)
@@ -646,10 +648,6 @@ relay_weechat_msg_add_hdata (struct t_relay_weechat_msg *msg,
                 goto end;
             }
         }
-        else
-        {
-            pointer = NULL;
-        }
     }
     else
         pointer = weechat_hdata_get_list (ptr_hdata_head, list_path[0]);
diff --git a/src/plugins/relay/weechat/relay-weechat-protocol.c b/src/plugins/relay/weechat/relay-weechat-protocol.c
index 7436949bf..b999a2ff7 100644
--- a/src/plugins/relay/weechat/relay-weechat-protocol.c
+++ b/src/plugins/relay/weechat/relay-weechat-protocol.c
@@ -51,14 +51,17 @@ struct t_gui_buffer *
 relay_weechat_protocol_get_buffer (const char *arg)
 {
     struct t_gui_buffer *ptr_buffer;
+    unsigned long value;
     int rc;
 
     ptr_buffer = NULL;
 
     if (strncmp (arg, "0x", 2) == 0)
     {
-        rc = sscanf (arg, "%p", &ptr_buffer);
-        if ((rc != EOF) && (rc != 0) && ptr_buffer)
+        rc = sscanf (arg, "%lx", &value);
+        if ((rc != EOF) && (rc != 0))
+            ptr_buffer = (struct t_gui_buffer *)value;
+        if (ptr_buffer)
         {
             if (!weechat_hdata_check_pointer (
                     relay_hdata_buffer,
@@ -69,10 +72,6 @@ relay_weechat_protocol_get_buffer (const char *arg)
                 ptr_buffer = NULL;
             }
         }
-        else
-        {
-            ptr_buffer = NULL;
-        }
     }
     else
         ptr_buffer = weechat_buffer_search ("==", arg);
@@ -529,7 +528,7 @@ RELAY_WEECHAT_PROTOCOL_CALLBACK(info)
 RELAY_WEECHAT_PROTOCOL_CALLBACK(infolist)
 {
     struct t_relay_weechat_msg *msg;
-    void *pointer;
+    unsigned long value;
     char *args;
     int rc;
 
@@ -538,17 +537,17 @@ RELAY_WEECHAT_PROTOCOL_CALLBACK(infolist)
     msg = relay_weechat_msg_new (id);
     if (msg)
     {
-        pointer = NULL;
+        value = 0;
         args = NULL;
         if (argc > 1)
         {
-            rc = sscanf (argv[1], "%p", &pointer);
+            rc = sscanf (argv[1], "%lx", &value);
             if ((rc == EOF) || (rc == 0))
-                pointer = NULL;
+                value = 0;
             if (argc > 2)
                 args = argv_eol[2];
         }
-        relay_weechat_msg_add_infolist (msg, argv[0], pointer, args);
+        relay_weechat_msg_add_infolist (msg, argv[0], (void *)value, args);
         relay_weechat_msg_send (client, msg);
         relay_weechat_msg_free (msg);
     }
diff --git a/src/plugins/script/script-mouse.c b/src/plugins/script/script-mouse.c
index 9816bb19b..e9bf73157 100644
--- a/src/plugins/script/script-mouse.c
+++ b/src/plugins/script/script-mouse.c
@@ -41,6 +41,7 @@ script_mouse_focus_chat_cb (const void *pointer, void *data,
 {
     const char *buffer;
     int rc;
+    unsigned long value;
     struct t_gui_buffer *ptr_buffer;
     long x;
     char *error, str_date[64];
@@ -58,10 +59,12 @@ script_mouse_focus_chat_cb (const void *pointer, void *data,
     if (!buffer)
         return info;
 
-    rc = sscanf (buffer, "%p", &ptr_buffer);
+    rc = sscanf (buffer, "%lx", &value);
     if ((rc == EOF) || (rc == 0))
         return info;
 
+    ptr_buffer = (struct t_gui_buffer *)value;
+
     if (!ptr_buffer || (ptr_buffer != script_buffer))
         return info;
 
diff --git a/src/plugins/spell/spell-info.c b/src/plugins/spell/spell-info.c
index 048d48289..067817f9c 100644
--- a/src/plugins/spell/spell-info.c
+++ b/src/plugins/spell/spell-info.c
@@ -39,6 +39,7 @@ spell_info_info_spell_dict_cb (const void *pointer, void *data,
                                const char *arguments)
 {
     int rc;
+    unsigned long value;
     struct t_gui_buffer *buffer;
     const char *buffer_full_name, *ptr_dict;
 
@@ -55,9 +56,10 @@ spell_info_info_spell_dict_cb (const void *pointer, void *data,
     buffer_full_name = NULL;
     if (strncmp (arguments, "0x", 2) == 0)
     {
-        rc = sscanf (arguments, "%p", &buffer);
-        if ((rc != EOF) && (rc != 0) && buffer)
+        rc = sscanf (arguments, "%lx", &value);
+        if ((rc != EOF) && (rc != 0) && value)
         {
+            buffer = (struct t_gui_buffer *)value;
             if (weechat_hdata_check_pointer (weechat_hdata_get ("buffer"),
                                              NULL, buffer))
             {
diff --git a/src/plugins/spell/spell.c b/src/plugins/spell/spell.c
index 99494b0c3..ab51dd410 100644
--- a/src/plugins/spell/spell.c
+++ b/src/plugins/spell/spell.c
@@ -715,6 +715,7 @@ spell_modifier_cb (const void *pointer, void *data,
                    const char *modifier,
                    const char *modifier_data, const char *string)
 {
+    unsigned long value;
     struct t_gui_buffer *buffer;
     struct t_spell_speller_buffer *ptr_speller_buffer;
     char **result, *ptr_string, *ptr_string_orig, *pos_space;
@@ -737,10 +738,12 @@ spell_modifier_cb (const void *pointer, void *data,
     if (!string)
         return NULL;
 
-    rc = sscanf (modifier_data, "%p", &buffer);
+    rc = sscanf (modifier_data, "%lx", &value);
     if ((rc == EOF) || (rc == 0))
         return NULL;
 
+    buffer = (struct t_gui_buffer *)value;
+
     /* check text during search only if option is enabled */
     if (weechat_buffer_get_integer (buffer, "text_search")
         && !weechat_config_boolean (spell_config_check_during_search))
diff --git a/src/plugins/trigger/trigger-callback.c b/src/plugins/trigger/trigger-callback.c
index e69157b58..f928c1610 100644
--- a/src/plugins/trigger/trigger-callback.c
+++ b/src/plugins/trigger/trigger-callback.c
@@ -999,7 +999,7 @@ trigger_callback_line_cb (const void *pointer, void *data,
 {
     struct t_hashtable *hashtable;
     struct t_weelist_item *ptr_item;
-    void *ptr;
+    unsigned long value;
     const char *ptr_key, *ptr_value;
     char **tags, *str_tags, *string_no_color;
     int rc, num_tags;
@@ -1023,10 +1023,10 @@ trigger_callback_line_cb (const void *pointer, void *data,
     ptr_value = weechat_hashtable_get (line, "buffer");
     if (!ptr_value || (ptr_value[0] != '0') || (ptr_value[1] != 'x'))
         goto end;
-    rc = sscanf (ptr_value, "%p", &ptr);
+    rc = sscanf (ptr_value + 2, "%lx", &value);
     if ((rc == EOF) || (rc < 1))
         goto end;
-    ctx.buffer = ptr;
+    ctx.buffer = (void *)value;
 
     weechat_hashtable_set (ctx.pointers, "buffer", ctx.buffer);
     ptr_value = weechat_hashtable_get (line, "tags");
@@ -1363,7 +1363,7 @@ trigger_callback_focus_cb (const void *pointer, void *data,
                            struct t_hashtable *info)
 {
     const char *ptr_value;
-    void *ptr;
+    unsigned long value;
     int rc;
 
     TRIGGER_CALLBACK_CB_INIT(info);
@@ -1377,16 +1377,16 @@ trigger_callback_focus_cb (const void *pointer, void *data,
     ptr_value = weechat_hashtable_get (info, "_window");
     if (ptr_value && ptr_value[0] && (strncmp (ptr_value, "0x", 2) == 0))
     {
-        rc = sscanf (ptr_value, "%p", &ptr);
+        rc = sscanf (ptr_value + 2, "%lx", &value);
         if ((rc != EOF) && (rc >= 1))
-            weechat_hashtable_set (ctx.pointers, "window", ptr);
+            weechat_hashtable_set (ctx.pointers, "window", (void *)value);
     }
     ptr_value = weechat_hashtable_get (info, "_buffer");
     if (ptr_value && ptr_value[0] && (strncmp (ptr_value, "0x", 2) == 0))
     {
-        rc = sscanf (ptr_value, "%p", &ptr);
+        rc = sscanf (ptr_value + 2, "%lx", &value);
         if ((rc != EOF) && (rc >= 1))
-            weechat_hashtable_set (ctx.pointers, "buffer", ptr);
+            weechat_hashtable_set (ctx.pointers, "buffer", (void *)value);
     }
 
     /* execute the trigger (conditions, regex, command) */
diff --git a/src/plugins/typing/typing.c b/src/plugins/typing/typing.c
index 515e801d4..490148579 100644
--- a/src/plugins/typing/typing.c
+++ b/src/plugins/typing/typing.c
@@ -183,6 +183,7 @@ typing_input_text_for_buffer_modifier_cb (const void *pointer,
                                           const char *string)
 {
     int rc, text_search;
+    unsigned long value;
     const char *ptr_input_for_buffer;
     struct t_gui_buffer *ptr_buffer;
     struct t_typing_status *ptr_typing_status;
@@ -193,9 +194,10 @@ typing_input_text_for_buffer_modifier_cb (const void *pointer,
     (void) modifier;
     (void) string;
 
-    rc = sscanf (modifier_data, "%p", &ptr_buffer);
+    rc = sscanf (modifier_data, "%lx", &value);
     if ((rc == EOF) || (rc == 0))
         return NULL;
+    ptr_buffer = (struct t_gui_buffer *)value;
 
     /* ignore any change in input if the user is searching text in the buffer */
     text_search = weechat_buffer_get_integer (ptr_buffer, "text_search");
@@ -382,6 +384,7 @@ typing_typing_set_nick_signal_cb (const void *pointer, void *data,
 {
     char **items;
     int num_items, rc, state, updated;
+    unsigned long value;
     struct t_gui_buffer *ptr_buffer;
     struct t_typing_status *ptr_typing_status;
 
@@ -396,9 +399,10 @@ typing_typing_set_nick_signal_cb (const void *pointer, void *data,
     if (!items || (num_items != 3))
         goto end;
 
-    rc = sscanf (items[0], "%p", &ptr_buffer);
+    rc = sscanf (items[0], "%lx", &value);
     if ((rc == EOF) || (rc == 0))
         goto end;
+    ptr_buffer = (struct t_gui_buffer *)value;
     if (!ptr_buffer)
         goto end;
 
diff --git a/tests/unit/core/test-core-eval.cpp b/tests/unit/core/test-core-eval.cpp
index ae88e3b9f..4344e8cd2 100644
--- a/tests/unit/core/test-core-eval.cpp
+++ b/tests/unit/core/test-core-eval.cpp
@@ -1037,7 +1037,6 @@ TEST(CoreEval, EvalExpression)
     WEE_CHECK_EVAL("", "${buffer[].full_name}");
     WEE_CHECK_EVAL("", "${buffer[0x0].full_name}");
     WEE_CHECK_EVAL("", "${buffer[0x1].full_name}");
-    WEE_CHECK_EVAL("", "${buffer[0xZ].full_name}");
     WEE_CHECK_EVAL("", "${buffer[unknown_list].full_name}");
     WEE_CHECK_EVAL("", "${unknown_pointer}");
     WEE_CHECK_EVAL("", "${my_null_pointer}");