diff --git a/gtk2_ardour/triggerbox_ui.cc b/gtk2_ardour/triggerbox_ui.cc
index 89b4de83a1..db7a552303 100644
--- a/gtk2_ardour/triggerbox_ui.cc
+++ b/gtk2_ardour/triggerbox_ui.cc
@@ -664,7 +664,7 @@ TriggerEntry::follow_button_event (GdkEvent* ev)
 			switch (ev->button.button) {
 				case 1:
 				case 3:
-					follow_context_menu (ev->button);
+					follow_context_menu (&ev->button);
 				default:
 					break;
 			}