diff --git a/js/ui/main.js b/js/ui/main.js
index 47dadef3b..155cdb299 100644
--- a/js/ui/main.js
+++ b/js/ui/main.js
@@ -223,7 +223,7 @@ function start() {
     global.screen.connect('window-entered-monitor', _windowEnteredMonitor);
     global.screen.connect('window-left-monitor', _windowLeftMonitor);
 
-    Mainloop.idle_add(_nWorkspacesChanged);
+    _nWorkspacesChanged();
 }
 
 let _workspaces = [];