diff --git a/js/ui/windowManager.js b/js/ui/windowManager.js
index 473e9babb..d827b22bb 100644
--- a/js/ui/windowManager.js
+++ b/js/ui/windowManager.js
@@ -160,7 +160,7 @@ WindowManager.prototype = {
     },
 
     _shouldAnimate : function(actor) {
-        if (Main.overview.visible || this._animationsBlocked > 0)
+        if (Main.overview.visible || this._animationBlockCount > 0)
             return false;
         if (actor && (actor.meta_window.get_window_type() != Meta.WindowType.NORMAL))
             return false;