diff --git a/win32.c b/win32.c
index 10b6d4212a..60e7d29153 100644
--- a/win32.c
+++ b/win32.c
@@ -700,13 +700,13 @@ static int Win32GdiMainLoop(void)
 #else
 		if (_wnd.has_focus && GetAsyncKeyState(VK_TAB) < 0) {
 #endif
-			if (!_networking && _game_mode != GM_MENU) _fast_forward |= 2;
-		} else if (_fast_forward&2) {
+			/* Disable speeding up game with ALT+TAB (if syskey is pressed, the
+			 * real key is in the upper 16 bits (see WM_SYSKEYDOWN in WndProcGdi()) */
+			if (((_pressed_key>>16) & WKC_TAB) && !_networking && _game_mode != GM_MENU) _fast_forward |= 2;
+		} else if (_fast_forward & 2)
 			_fast_forward = 0;
-		}
-
 
-		cur_ticks=GetTickCount();
+		cur_ticks = GetTickCount();
 		if ((_fast_forward && !_pause) || cur_ticks > next_tick)
 			next_tick = cur_ticks;