diff -r 394f3b06dba1 -r 29b2821d1262 ui/gtk/toolkit.h
--- a/ui/gtk/toolkit.h	Thu May 15 22:13:25 2014 +0200
+++ b/ui/gtk/toolkit.h	Fri May 16 16:19:46 2014 +0200
@@ -40,7 +40,7 @@
 typedef struct UiEventData {
     UiObject    *obj;
     ui_callback callback;
-    void        *user_data;
+    void        *userdata;
     int         value;
 } UiEventData;