diff --git a/panda/src/testbed/deadrec_rec.cxx b/panda/src/testbed/deadrec_rec.cxx
index d8a8a0dff7..faf6905f51 100644
--- a/panda/src/testbed/deadrec_rec.cxx
+++ b/panda/src/testbed/deadrec_rec.cxx
@@ -271,7 +271,7 @@ static void correct_event(CPT_Event e) {
   }
 }
 
-typedef void event_func(CPT_Event);
+typedef void (*event_func)(CPT_Event);
 
 static inline GuiButton* make_button(const string& name, Node* font,
 				     EventHandler& eh, event_func func) {