diff -r 91f45354d1e2 -r 3c63f57a8f77 ui/gtk/tree.c
--- a/ui/gtk/tree.c	Sun Feb 01 12:37:31 2015 +0100
+++ b/ui/gtk/tree.c	Wed Feb 11 11:34:55 2015 +0100
@@ -78,7 +78,7 @@
     
     // add callback
     if(f) {
-        UiTreeEventData *event = ui_malloc(obj->ctx, sizeof(UiEventData));
+        UiTreeEventData *event = ui_malloc(obj->ctx, sizeof(UiTreeEventData));
         event->obj = obj;
         event->userdata = udata;
         event->activate = f;