diff --git a/ChangeLog b/ChangeLog
index 739c07da1..f26cca636 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -13,6 +13,8 @@ http://weechat.org/files/releasenotes/ReleaseNotes-devel.html[release notes]
 
 == Version 0.4.4 (under dev)
 
+* core: fix memory leak in function gui_key_add_to_infolist (in case of
+  insufficient memory)
 * core: fix use of invalid pointer in function gui_bar_window_content_alloc
   (in case of insufficient memory)
 * core: fix uninitialized value in function string_decode_base64
diff --git a/src/gui/gui-key.c b/src/gui/gui-key.c
index 9904b5759..9c66ddf7b 100644
--- a/src/gui/gui-key.c
+++ b/src/gui/gui-key.c
@@ -1914,7 +1914,10 @@ gui_key_add_to_infolist (struct t_infolist *infolist, struct t_gui_key *key)
     if (expanded_key)
     {
         if (!infolist_new_var_string (ptr_item, "key", expanded_key))
+        {
+            free (expanded_key);
             return 0;
+        }
         free (expanded_key);
     }
     if (!infolist_new_var_integer (ptr_item, "area_type1", key->area_type[0]))