diff --git a/include/tr/event_handler.h b/include/tr/event_handler.h
index d043c2f..e4f7d4f 100644
--- a/include/tr/event_handler.h
+++ b/include/tr/event_handler.h
@@ -35,7 +35,7 @@ TR_CLASS(TR_EventHandler);
 
 #include "tr/event_dispatcher.h"
 
-typedef TR_EventDone (* TR_EventMethod_fptr)(TR_EventHandler, TR_Event);
+typedef TR_EventDone (* TR_EventMethod_fptr)(void *, TR_Event);
 
 TR_CLASS(TR_EventHandler) {
 	TR_EventDispatcher dispatcher[10];