--- a/roadveh_gui.c	Thu Nov 30 22:23:11 2006 +0000
+++ b/roadveh_gui.c	Fri Dec 01 00:09:13 2006 +0000
@@ -455,10 +455,6 @@
 static void NewRoadVehWndProc(Window *w, WindowEvent *e)
 {
 	switch (e->event) {
-		case WE_INVALIDATE_DATA:
-			SetWindowDirty(w);
-			break;
-
 	case WE_PAINT:
 		DrawNewRoadVehWindow(w);
 		break;