diff --git a/src/settings.cpp b/src/settings.cpp
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -1172,7 +1172,7 @@ static bool InvalidateNewGRFChangeWindow
 {
 	InvalidateWindowClassesData(WC_SAVELOAD);
 	DeleteWindowByClass(WC_GAME_OPTIONS);
-	ReInitAllWindows();
+	ReInitAllWindows(_gui_zoom_cfg);
 	return true;
 }