Fix dumb linting error
diff --git a/src/windows/NotificationProxy.js b/src/windows/NotificationProxy.js
index e826557..c5bc272 100644
--- a/src/windows/NotificationProxy.js
+++ b/src/windows/NotificationProxy.js
@@ -120,7 +120,9 @@
     var defaultButton = dlg.querySelector(".dlgButtonFirst");
     dlg.addEventListener("keypress",function(e) {
         if (e.keyCode === 13) { // enter key
-            defaultButton && defaultButton.click();
+            if(defaultButton) {
+                defaultButton.click();
+            }
         }
     });