diff --git a/ui/pages/confirm-transaction/conf-tx.js b/ui/pages/confirm-transaction/conf-tx.js
index 8990e21c5..f27f865e4 100644
--- a/ui/pages/confirm-transaction/conf-tx.js
+++ b/ui/pages/confirm-transaction/conf-tx.js
@@ -135,7 +135,7 @@ class ConfirmTxScreen extends Component {
   }
 
   stopPropagation(event) {
-    if (event.stopPropagation) {
+    if (event?.stopPropagation) {
       event.stopPropagation();
     }
   }