--- a/viewport.c	Wed May 10 21:55:44 2006 +0000
+++ b/viewport.c	Thu May 11 05:32:26 2006 +0000
@@ -1686,7 +1686,10 @@
 	CheckClickOnLandscape(vp, x, y);
 
 	v = CheckClickOnVehicle(vp, x, y);
-	if (v != NULL) _on_vehicle_click_proc[v->type - 0x10](v);
+	if (v != NULL) {
+		DEBUG(misc, 2) ("Vehicle %d at %p", v->index, v);
+		_on_vehicle_click_proc[v->type - 0x10](v);
+	}
 }
 
 Vehicle *CheckMouseOverVehicle(void)