diff --git a/src/intro_gui.cpp b/src/intro_gui.cpp
--- a/src/intro_gui.cpp
+++ b/src/intro_gui.cpp
@@ -254,7 +254,6 @@ static const WindowDesc _select_game_des
 	WDP_CENTER, WDP_CENTER, 336, 213, 336, 213,
 	WC_SELECT_GAME, WC_NONE,
 	WDF_STD_TOOLTIPS | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,
-	NULL,
 	_nested_select_game_widgets, lengthof(_nested_select_game_widgets)
 );