diff --git a/ChangeLog.adoc b/ChangeLog.adoc
index eff19d0f9..4dd0bdeca 100644
--- a/ChangeLog.adoc
+++ b/ChangeLog.adoc
@@ -43,6 +43,7 @@ Bug fixes::
   * ruby: fix function hdata_get_string
   * scripts: fix issue with year ≥ 2038 in functions infolist_new_var_time, print_date_tags and print_y_date_tags (plugins: python/lua/tcl/guile/javascript)
   * scripts: fix issue with long interval in function hook_timer (plugins: python/ruby/lua/tcl/guile/javascript/php)
+  * trigger: fix error on monitor buffer creation when trigger debug is >= 1 and monitor buffer is closed
   * xfer: fix crash when closing DCC chat buffer
   * xfer: disconnect all active DCC chats and files on `/upgrade`
   * xfer: fix refresh of xfer buffer after `/upgrade`
diff --git a/src/plugins/trigger/trigger-buffer.c b/src/plugins/trigger/trigger-buffer.c
index 7f5a91e65..efa2f1269 100644
--- a/src/plugins/trigger/trigger-buffer.c
+++ b/src/plugins/trigger/trigger-buffer.c
@@ -200,10 +200,13 @@ trigger_buffer_open (const char *filter, int switch_to_buffer)
 {
     if (!trigger_buffer)
     {
-        trigger_buffer = weechat_buffer_new (
-            TRIGGER_BUFFER_NAME,
-            &trigger_buffer_input_cb, NULL, NULL,
-            &trigger_buffer_close_cb, NULL, NULL);
+        if (!weechat_buffer_search (TRIGGER_PLUGIN_NAME, TRIGGER_BUFFER_NAME))
+        {
+            trigger_buffer = weechat_buffer_new (
+                TRIGGER_BUFFER_NAME,
+                &trigger_buffer_input_cb, NULL, NULL,
+                &trigger_buffer_close_cb, NULL, NULL);
+        }
 
         /* failed to create buffer ? then return */
         if (!trigger_buffer)