diff --git a/lib/renderer/webview/webview.h b/lib/renderer/webview/webview.h
index da041b0d3..79aba1dd0 100644
--- a/lib/renderer/webview/webview.h
+++ b/lib/renderer/webview/webview.h
@@ -2338,10 +2338,9 @@ struct webview_priv
     size.height = height;
     [w->priv.window setMaxSize:size];
     
-    [w->priv.window setCollectionBehavior:NSWindowCollectionBehaviorFullScreenAuxiliary|NSWindowCollectionBehaviorFullScreenNone|NSWindowCollectionBehaviorFullScreenDisallowsTiling];
-       
-    NSButton *button = [w->priv.window standardWindowButton:NSWindowZoomButton];
-    [button setEnabled: NO];
+    dispatch_async(dispatch_get_main_queue(), ^{
+      [[w->priv.window standardWindowButton:NSWindowZoomButton] setEnabled: NO];
+    });
   }
   
   WEBVIEW_API void webview_set_fullscreen(struct webview *w, int fullscreen)