diff -r 8b3ef2774caf -r 497d35361ad4 src/depot_gui.cpp
--- a/src/depot_gui.cpp	Sat Aug 16 14:15:32 2008 +0000
+++ b/src/depot_gui.cpp	Sat Aug 16 18:01:23 2008 +0000
@@ -1019,9 +1019,10 @@
 		if (this->sel != INVALID_VEHICLE) {
 			_cursor.vehchain = _ctrl_pressed;
 			this->InvalidateWidget(DEPOT_WIDGET_MATRIX);
+			return ES_HANDLED;
 		}
 
-		return ES_HANDLED;
+		return ES_NOT_HANDLED;
 	}
 };