diff --git a/js/ui/windowPreview.js b/js/ui/windowPreview.js
index 28377fd5f..cf3fbdaa6 100644
--- a/js/ui/windowPreview.js
+++ b/js/ui/windowPreview.js
@@ -49,18 +49,18 @@ export const WindowPreview = GObject.registerClass({
         this._workspace = workspace;
         this._overviewAdjustment = overviewAdjustment;
 
+        const windowContainer = new Clutter.Actor({
+            pivot_point: new Graphene.Point({x: 0.5, y: 0.5}),
+        });
+
         super._init({
             reactive: true,
             can_focus: true,
             accessible_role: Atk.Role.PUSH_BUTTON,
             offscreen_redirect: Clutter.OffscreenRedirect.AUTOMATIC_FOR_OPACITY,
+            windowContainer,
         });
 
-        const windowContainer = new Clutter.Actor({
-            pivot_point: new Graphene.Point({x: 0.5, y: 0.5}),
-        });
-        this.window_container = windowContainer;
-
         windowContainer.connect('notify::scale-x',
             () => this._adjustOverlayOffsets());
         // gjs currently can't handle setting an actors layout manager during