diff --git a/ChangeLog b/ChangeLog
index 75810ee1e1..d56c94a207 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2005-05-31  Sven Neumann  <sven@gimp.org>
 
+	* app/widgets/gimpaction.c (gimp_action_set_proxy): added missing
+	cast.
+
 	* app/core/gimpprojection-construct.c: code cleanup.
 
 2005-05-31  Michael Natterer  <mitch@gimp.org>
diff --git a/app/widgets/gimpaction.c b/app/widgets/gimpaction.c
index b8ee5d8496..1661cd0988 100644
--- a/app/widgets/gimpaction.c
+++ b/app/widgets/gimpaction.c
@@ -274,7 +274,7 @@ gimp_action_set_proxy (GimpAction *action,
         {
           const gchar *help_id;
 
-          help_id = g_object_get_qdata (proxy, GIMP_HELP_ID);
+          help_id = g_object_get_qdata (G_OBJECT (proxy), GIMP_HELP_ID);
 
           gimp_help_set_help_data (proxy, tooltip, help_id);
           g_free (tooltip);