diff --git a/src/openttd.cpp b/src/openttd.cpp
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -1291,7 +1291,7 @@ static bool InitializeWindowsAndCaches()
 	WP(w, vp_d).dest_scrollpos_y = _saved_scrollpos_y;
 
 	ViewPort *vp = w->viewport;
-	vp->zoom = (ZoomLevel)min(_saved_scrollpos_zoom, ZOOM_LVL_MAX);
+	vp->zoom = min(_saved_scrollpos_zoom, ZOOM_LVL_MAX);
 	vp->virtual_width = ScaleByZoom(vp->width, vp->zoom);
 	vp->virtual_height = ScaleByZoom(vp->height, vp->zoom);