diff --git a/packages/common/dbp-common-demo.js b/packages/common/dbp-common-demo.js
index 0041152a22f0e9c9ea866724157cee05e75c327a..fad1b686ab060edc66778e4bd13431b2c895c616 100644
--- a/packages/common/dbp-common-demo.js
+++ b/packages/common/dbp-common-demo.js
@@ -113,7 +113,10 @@ export class DbpCommonDemo extends ScopedElementsMixin(LitElement) {
               `;
     }
 
-    buttonClickHandler() {
+    buttonClickHandler(e) {
+        // add class to button to end2end test if button was clicked
+        e.target.classList.add('button-clicked');
+
         setTimeout(() => {
             const scopedTagName = this.getScopedTagName('dbp-button');
             this.shadowRoot.querySelector(scopedTagName).stop();