diff --git a/packages/common/vpu-lit-element.js b/packages/common/vpu-lit-element.js
index cee389d51313866636395e54b7ec385e1dbfcc2f..817bbf92f17b0c2f8e20e48ed18d9ea0f71365e2 100644
--- a/packages/common/vpu-lit-element.js
+++ b/packages/common/vpu-lit-element.js
@@ -3,6 +3,10 @@ import $ from "jquery";
 
 export default class VPULitElement extends LitElement {
     $(selector) {
-        return $(this.shadowRoot === null ? this.querySelector(selector) : this.shadowRoot.querySelector(selector));
+        return $(this._(selector));
+    }
+
+    _(selector) {
+        return this.shadowRoot === null ? this.querySelector(selector) : this.shadowRoot.querySelector(selector);
     }
 }