diff --git a/packages/common/dbp-lit-element.js b/packages/common/dbp-lit-element.js
index 60f77faf0339788c98fd10937830910d7527bfb8..a299d582e997b898a856a6c0b764950d06d4e661 100644
--- a/packages/common/dbp-lit-element.js
+++ b/packages/common/dbp-lit-element.js
@@ -31,6 +31,12 @@ export default class DBPLitElement extends AdapterLitElement {
             : this.shadowRoot.querySelector(selector);
     }
 
+    _a(selector) {
+        return this.shadowRoot === null
+            ? this.querySelectorAll(selector)
+            : this.shadowRoot.querySelectorAll(selector);
+    }
+
     firstUpdated() {
         super.firstUpdated();
         this._renderDone = true;