diff --git a/ChangeLog.asciidoc b/ChangeLog.asciidoc
index e1d21c709..77cda3641 100644
--- a/ChangeLog.asciidoc
+++ b/ChangeLog.asciidoc
@@ -79,6 +79,8 @@ http://weechat.org/files/releasenotes/ReleaseNotes-devel.html[release notes]
 * core: add signals "key_combo_{default|search|cursor}"
 * core: display a warning in case of inconsistency between the options
   weechat.look.save_{config|layout}_on_exit
+* api: change type of arguments displayed/highlight in hook_print callback from
+  string to integer (in scripts)
 * api: allow wildcard "*" inside the mask in function string_match
 * api: allow value "-1" for property "hotlist" in function buffer_set (to remove
   a buffer from hotlist)
diff --git a/doc/en/weechat_plugin_api.en.txt b/doc/en/weechat_plugin_api.en.txt
index 91932efe5..c28f3aa78 100644
--- a/doc/en/weechat_plugin_api.en.txt
+++ b/doc/en/weechat_plugin_api.en.txt
@@ -7551,6 +7551,8 @@ hook = weechat.hook_connect("", "my.server.org", 1234, 1, 0, "",
 
 ==== weechat_hook_print
 
+_Updated in 0.4.3 and 1.0._
+
 Hook a message printed.
 
 Prototype:
@@ -7606,6 +7608,12 @@ Return value:
 
 * pointer to new hook, NULL if error occurred
 
+[IMPORTANT]
+In scripts, with WeeChat ≥ 1.0, the callback arguments 'displayed' and
+'highlight' are integers (with WeeChat ≤ 0.4.3, they were strings). +
+To be compatible with all versions, it is recommended to convert the argument
+to integer before testing it, for example in Python: "`if int(highlight):`".
+
 C example:
 
 [source,C]
@@ -7634,7 +7642,8 @@ hook = weechat.hook_print(buffer, tags, message, strip_colors, callback, callbac
 
 # example
 def my_print_cb(data, buffer, date, tags, displayed, highlight, prefix, message):
-    # ...
+    if int(highlight):
+        # ...
     return weechat.WEECHAT_RC_OK
 
 # catch all messages, on all buffers, without color
diff --git a/doc/fr/weechat_plugin_api.fr.txt b/doc/fr/weechat_plugin_api.fr.txt
index 338e5f15d..4dd6b7925 100644
--- a/doc/fr/weechat_plugin_api.fr.txt
+++ b/doc/fr/weechat_plugin_api.fr.txt
@@ -7683,6 +7683,8 @@ hook = weechat.hook_connect("", "my.server.org", 1234, 1, 0, "",
 
 ==== weechat_hook_print
 
+_Mis à jour dans la 0.4.3 et 1.0._
+
 Intercepter un message affiché.
 
 Prototype :
@@ -7741,6 +7743,13 @@ Valeur de retour :
 
 * pointeur vers le nouveau "hook", NULL en cas d'erreur
 
+[IMPORTANT]
+Dans les scripts, avec WeeChat ≥ 1.0, les paramètres du callback 'displayed' et
+'highlight' sont des entiers (avec WeeChat ≤ 0.4.3, ils étaient des chaînes). +
+Pour être compatible avec toutes les versions, il est recommandé de convertir
+le paramètre en entier avant de le tester, par exemple en Python :
+"`if int(highlight):`".
+
 Exemple en C :
 
 [source,C]
@@ -7769,7 +7778,8 @@ hook = weechat.hook_print(buffer, tags, message, strip_colors, callback, callbac
 
 # exemple
 def my_print_cb(data, buffer, date, tags, displayed, highlight, prefix, message):
-    # ...
+    if int(highlight):
+        # ...
     return weechat.WEECHAT_RC_OK
 
 # intercepter tous les messages, de tous les tampons, sans couleur
diff --git a/doc/it/weechat_plugin_api.it.txt b/doc/it/weechat_plugin_api.it.txt
index 2c9aaa0c4..9e8798678 100644
--- a/doc/it/weechat_plugin_api.it.txt
+++ b/doc/it/weechat_plugin_api.it.txt
@@ -7682,6 +7682,9 @@ hook = weechat.hook_connect("", "my.server.org", 1234, 1, 0, "",
 
 ==== weechat_hook_print
 
+// TRANSLATION MISSING
+_Updated in 0.4.3 and 1.0._
+
 Hook su un messaggio stampato.
 
 Prototipo:
@@ -7741,6 +7744,13 @@ Valore restituito:
 
 * puntatore al nuovo hook, NULL in caso di errore
 
+// TRANSLATION MISSING
+[IMPORTANT]
+In scripts, with WeeChat ≥ 1.0, the callback arguments 'displayed' and
+'highlight' are integers (with WeeChat ≤ 0.4.3, they were strings). +
+To be compatible with all versions, it is recommended to convert the argument
+to integer before testing it, for example in Python: "`if int(highlight):`".
+
 Esempio in C:
 
 [source,C]
@@ -7769,7 +7779,8 @@ hook = weechat.hook_print(buffer, tags, message, strip_colors, callback, callbac
 
 # esempio
 def my_print_cb(data, buffer, date, tags, displayed, highlight, prefix, message):
-    # ...
+    if int(highlight):
+        # ...
     return weechat.WEECHAT_RC_OK
 
 # cattura tutti i messaggi, su tutti i buffer, senza colore
diff --git a/doc/ja/weechat_plugin_api.ja.txt b/doc/ja/weechat_plugin_api.ja.txt
index 0057a699d..5c2dfde67 100644
--- a/doc/ja/weechat_plugin_api.ja.txt
+++ b/doc/ja/weechat_plugin_api.ja.txt
@@ -7545,6 +7545,8 @@ hook = weechat.hook_connect("", "my.server.org", 1234, 1, 0, "",
 
 ==== weechat_hook_print
 
+_Updated in 0.4.3 and 1.0_
+
 メッセージの表示をフックする。
 
 プロトタイプ:
@@ -7600,6 +7602,13 @@ struct t_hook *weechat_hook_print (struct t_gui_buffer *buffer,
 
 * 新しいフックへのポインタ、エラーが起きた場合は NULL
 
+// TRANSLATION MISSING
+[IMPORTANT]
+In scripts, with WeeChat ≥ 1.0, the callback arguments 'displayed' and
+'highlight' are integers (with WeeChat ≤ 0.4.3, they were strings). +
+To be compatible with all versions, it is recommended to convert the argument
+to integer before testing it, for example in Python: "`if int(highlight):`".
+
 C 言語での使用例:
 
 [source,C]
@@ -7628,7 +7637,8 @@ hook = weechat.hook_print(buffer, tags, message, strip_colors, callback, callbac
 
 # 例
 def my_print_cb(data, buffer, date, tags, displayed, highlight, prefix, message):
-    # ...
+    if int(highlight):
+        # ...
     return weechat.WEECHAT_RC_OK
 
 # catch all messages, on all buffers, without color
diff --git a/src/plugins/guile/weechat-guile-api.c b/src/plugins/guile/weechat-guile-api.c
index 1a1220e0a..fa0536697 100644
--- a/src/plugins/guile/weechat-guile-api.c
+++ b/src/plugins/guile/weechat-guile-api.c
@@ -2300,15 +2300,15 @@ weechat_guile_api_hook_print_cb (void *data, struct t_gui_buffer *buffer,
         func_argv[3] = weechat_string_build_with_split_string (tags, ",");
         if (!func_argv[3])
             func_argv[3] = strdup ("");
-        func_argv[4] = (displayed) ? strdup ("1") : strdup ("0");
-        func_argv[5] = (highlight) ? strdup ("1") : strdup ("0");
+        func_argv[4] = &displayed;
+        func_argv[5] = &highlight;
         func_argv[6] = (prefix) ? (char *)prefix : empty_arg;
         func_argv[7] = (message) ? (char *)message : empty_arg;
 
         rc = (int *) weechat_guile_exec (script_callback->script,
                                          WEECHAT_SCRIPT_EXEC_INT,
                                          script_callback->function,
-                                         "ssssssss", func_argv);
+                                         "ssssiiss", func_argv);
 
         if (!rc)
             ret = WEECHAT_RC_ERROR;
@@ -2321,10 +2321,6 @@ weechat_guile_api_hook_print_cb (void *data, struct t_gui_buffer *buffer,
             free (func_argv[1]);
         if (func_argv[3])
             free (func_argv[3]);
-        if (func_argv[4])
-            free (func_argv[4]);
-        if (func_argv[5])
-            free (func_argv[5]);
 
         return ret;
     }
diff --git a/src/plugins/lua/weechat-lua-api.c b/src/plugins/lua/weechat-lua-api.c
index d7f841c21..7e9d4b02c 100644
--- a/src/plugins/lua/weechat-lua-api.c
+++ b/src/plugins/lua/weechat-lua-api.c
@@ -2496,15 +2496,15 @@ weechat_lua_api_hook_print_cb (void *data, struct t_gui_buffer *buffer,
         func_argv[3] = weechat_string_build_with_split_string (tags, ",");
         if (!func_argv[3])
             func_argv[3] = strdup ("");
-        func_argv[4] = (displayed) ? strdup ("1") : strdup ("0");
-        func_argv[5] = (highlight) ? strdup ("1") : strdup ("0");
+        func_argv[4] = &displayed;
+        func_argv[5] = &highlight;
         func_argv[6] = (prefix) ? (char *)prefix : empty_arg;
         func_argv[7] = (message) ? (char *)message : empty_arg;
 
         rc = (int *) weechat_lua_exec (script_callback->script,
                                        WEECHAT_SCRIPT_EXEC_INT,
                                        script_callback->function,
-                                       "ssssssss", func_argv);
+                                       "ssssiiss", func_argv);
 
         if (!rc)
             ret = WEECHAT_RC_ERROR;
@@ -2517,10 +2517,6 @@ weechat_lua_api_hook_print_cb (void *data, struct t_gui_buffer *buffer,
             free (func_argv[1]);
         if (func_argv[3])
             free (func_argv[3]);
-        if (func_argv[4])
-            free (func_argv[4]);
-        if (func_argv[5])
-            free (func_argv[5]);
 
         return ret;
     }
diff --git a/src/plugins/perl/weechat-perl-api.c b/src/plugins/perl/weechat-perl-api.c
index 6026cfd90..b6af4654d 100644
--- a/src/plugins/perl/weechat-perl-api.c
+++ b/src/plugins/perl/weechat-perl-api.c
@@ -2332,15 +2332,15 @@ weechat_perl_api_hook_print_cb (void *data, struct t_gui_buffer *buffer,
         func_argv[3] = weechat_string_build_with_split_string (tags, ",");
         if (!func_argv[3])
             func_argv[3] = strdup ("");
-        func_argv[4] = (displayed) ? strdup ("1") : strdup ("0");
-        func_argv[5] = (highlight) ? strdup ("1") : strdup ("0");
+        func_argv[4] = &displayed;
+        func_argv[5] = &highlight;
         func_argv[6] = (prefix) ? (char *)prefix : empty_arg;
         func_argv[7] = (message) ? (char *)message : empty_arg;
 
         rc = (int *) weechat_perl_exec (script_callback->script,
                                         WEECHAT_SCRIPT_EXEC_INT,
                                         script_callback->function,
-                                        "ssssssss", func_argv);
+                                        "ssssiiss", func_argv);
 
         if (!rc)
             ret = WEECHAT_RC_ERROR;
@@ -2353,10 +2353,6 @@ weechat_perl_api_hook_print_cb (void *data, struct t_gui_buffer *buffer,
             free (func_argv[1]);
         if (func_argv[3])
             free (func_argv[3]);
-        if (func_argv[4])
-            free (func_argv[4]);
-        if (func_argv[5])
-            free (func_argv[5]);
 
         return ret;
     }
diff --git a/src/plugins/python/weechat-python-api.c b/src/plugins/python/weechat-python-api.c
index ee0dfa4be..c79196ad5 100644
--- a/src/plugins/python/weechat-python-api.c
+++ b/src/plugins/python/weechat-python-api.c
@@ -2438,15 +2438,15 @@ weechat_python_api_hook_print_cb (void *data, struct t_gui_buffer *buffer,
         func_argv[3] = weechat_string_build_with_split_string (tags, ",");
         if (!func_argv[3])
             func_argv[3] = strdup ("");
-        func_argv[4] = (displayed) ? strdup ("1") : strdup ("0");
-        func_argv[5] = (highlight) ? strdup ("1") : strdup ("0");
+        func_argv[4] = PyLong_FromLong((long)displayed);
+        func_argv[5] = PyLong_FromLong((long)highlight);
         func_argv[6] = (prefix) ? (char *)prefix : empty_arg;
         func_argv[7] = (message) ? (char *)message : empty_arg;
 
         rc = (int *) weechat_python_exec (script_callback->script,
                                           WEECHAT_SCRIPT_EXEC_INT,
                                           script_callback->function,
-                                          "ssssssss", func_argv);
+                                          "ssssOOss", func_argv);
 
         if (!rc)
             ret = WEECHAT_RC_ERROR;
@@ -2460,9 +2460,13 @@ weechat_python_api_hook_print_cb (void *data, struct t_gui_buffer *buffer,
         if (func_argv[3])
             free (func_argv[3]);
         if (func_argv[4])
-            free (func_argv[4]);
+        {
+            Py_XDECREF((PyObject *)func_argv[4]);
+        }
         if (func_argv[5])
-            free (func_argv[5]);
+        {
+            Py_XDECREF((PyObject *)func_argv[5]);
+        }
 
         return ret;
     }
diff --git a/src/plugins/ruby/weechat-ruby-api.c b/src/plugins/ruby/weechat-ruby-api.c
index 6f4f332a7..752a17861 100644
--- a/src/plugins/ruby/weechat-ruby-api.c
+++ b/src/plugins/ruby/weechat-ruby-api.c
@@ -2848,15 +2848,15 @@ weechat_ruby_api_hook_print_cb (void *data, struct t_gui_buffer *buffer,
         func_argv[3] = weechat_string_build_with_split_string (tags, ",");
         if (!func_argv[3])
             func_argv[3] = strdup ("");
-        func_argv[4] = (displayed) ? strdup ("1") : strdup ("0");
-        func_argv[5] = (highlight) ? strdup ("1") : strdup ("0");
+        func_argv[4] = &displayed;
+        func_argv[5] = &highlight;
         func_argv[6] = (prefix) ? (char *)prefix : empty_arg;
         func_argv[7] = (message) ? (char *)message : empty_arg;
 
         rc = (int *) weechat_ruby_exec (script_callback->script,
                                         WEECHAT_SCRIPT_EXEC_INT,
                                         script_callback->function,
-                                        "ssssssss", func_argv);
+                                        "ssssiiss", func_argv);
 
         if (!rc)
             ret = WEECHAT_RC_ERROR;
@@ -2869,10 +2869,6 @@ weechat_ruby_api_hook_print_cb (void *data, struct t_gui_buffer *buffer,
             free (func_argv[1]);
         if (func_argv[3])
             free (func_argv[3]);
-        if (func_argv[4])
-            free (func_argv[4]);
-        if (func_argv[5])
-            free (func_argv[5]);
 
         return ret;
     }
diff --git a/src/plugins/tcl/weechat-tcl-api.c b/src/plugins/tcl/weechat-tcl-api.c
index cf79da7f8..7ba8689e3 100644
--- a/src/plugins/tcl/weechat-tcl-api.c
+++ b/src/plugins/tcl/weechat-tcl-api.c
@@ -2764,15 +2764,15 @@ weechat_tcl_api_hook_print_cb (void *data, struct t_gui_buffer *buffer,
         func_argv[3] = weechat_string_build_with_split_string (tags, ",");
         if (!func_argv[3])
             func_argv[3] = strdup ("");
-        func_argv[4] = (displayed) ? strdup ("1") : strdup ("0");
-        func_argv[5] = (highlight) ? strdup ("1") : strdup ("0");
+        func_argv[4] = &displayed;
+        func_argv[5] = &highlight;
         func_argv[6] = (prefix) ? (char *)prefix : empty_arg;
         func_argv[7] = (message) ? (char *)message : empty_arg;
 
         rc = (int *) weechat_tcl_exec (script_callback->script,
                                        WEECHAT_SCRIPT_EXEC_INT,
                                        script_callback->function,
-                                       "ssssssss", func_argv);
+                                       "ssssiiss", func_argv);
 
         if (!rc)
             ret = WEECHAT_RC_ERROR;
@@ -2785,10 +2785,6 @@ weechat_tcl_api_hook_print_cb (void *data, struct t_gui_buffer *buffer,
             free (func_argv[1]);
         if (func_argv[3])
             free (func_argv[3]);
-        if (func_argv[4])
-            free (func_argv[4]);
-        if (func_argv[5])
-            free (func_argv[5]);
 
         return ret;
     }