--- a/src/town_gui.cpp	Tue Feb 13 13:00:37 2007 +0000
+++ b/src/town_gui.cpp	Tue Feb 13 18:07:36 2007 +0000
@@ -252,7 +252,7 @@
 		SetDParam(1, t->max_mail);
 		DrawString(2, 127, STR_200E_MAIL_LAST_MONTH_MAX, 0);
 
-		DrawWindowViewport(w);
+		w->DrawViewport();
 		break;
 
 	case WE_CLICK: