diff -r 3cb24f59d83e -r 36a38b287c05 src/toolbar_gui.cpp
--- a/src/toolbar_gui.cpp	Tue Jul 01 18:56:40 2008 +0000
+++ b/src/toolbar_gui.cpp	Thu Jul 03 01:08:35 2008 +0000
@@ -520,7 +520,7 @@
 static void ToolbarZoomInClick(Window *w)
 {
 	if (DoZoomInOutWindow(ZOOM_IN, FindWindowById(WC_MAIN_WINDOW, 0))) {
-		w->HandleButtonClick((_game_mode == GM_EDITOR) ? TBSE_ZOOMIN : TBN_ZOOMIN);
+		w->HandleButtonClick((_game_mode == GM_EDITOR) ? (byte)TBSE_ZOOMIN : (byte)TBN_ZOOMIN);
 		SndPlayFx(SND_15_BEEP);
 	}
 }
@@ -530,7 +530,7 @@
 static void ToolbarZoomOutClick(Window *w)
 {
 	if (DoZoomInOutWindow(ZOOM_OUT, FindWindowById(WC_MAIN_WINDOW, 0))) {
-		w->HandleButtonClick((_game_mode == GM_EDITOR) ? TBSE_ZOOMOUT : TBN_ZOOMOUT);
+		w->HandleButtonClick((_game_mode == GM_EDITOR) ? (byte)TBSE_ZOOMOUT : (byte)TBN_ZOOMOUT);
 		SndPlayFx(SND_15_BEEP);
 	}
 }