diff --git a/packages/form-builder/addon/components/cfb-slug-input.js b/packages/form-builder/addon/components/cfb-slug-input.js
index 1ea750f6a..63cc2e99b 100644
--- a/packages/form-builder/addon/components/cfb-slug-input.js
+++ b/packages/form-builder/addon/components/cfb-slug-input.js
@@ -33,7 +33,7 @@ export default class CfbSlugInputComponent extends Component {
   calculatePadding(element) {
     // Ensures that the element is already visible in combined use
     // with modal dialogs.
-    scheduleOnce("afterRender", this, this._calculatePadding, element);
+    scheduleOnce("afterRender", this, "_calculatePadding", element);
   }
 
   _calculatePadding(element) {