diff --git a/test/rendering/cases/stacking/main.js b/test/rendering/cases/stacking/main.js
index 2bda765f83..c038b9385e 100644
--- a/test/rendering/cases/stacking/main.js
+++ b/test/rendering/cases/stacking/main.js
@@ -28,6 +28,10 @@ class Element extends Layer {
   render() {
     return this.element;
   }
+
+  createRenderer() {
+    return {};
+  }
 }
 
 // elements for stacked controls