diff --git a/Tests/LibWeb/Text/expected/DOM/beforeunload.txt b/Tests/LibWeb/Text/expected/DOM/beforeunload.txt
index 1aa6ad32c5d..ad07be05124 100644
--- a/Tests/LibWeb/Text/expected/DOM/beforeunload.txt
+++ b/Tests/LibWeb/Text/expected/DOM/beforeunload.txt
@@ -1,2 +1,3 @@
 Before unload event fired
 Default prevented: true
+iframe load: about:blank
diff --git a/Tests/LibWeb/Text/input/DOM/beforeunload.html b/Tests/LibWeb/Text/input/DOM/beforeunload.html
index 870917ed0ea..2d1e7428296 100644
--- a/Tests/LibWeb/Text/input/DOM/beforeunload.html
+++ b/Tests/LibWeb/Text/input/DOM/beforeunload.html
@@ -3,12 +3,18 @@
     asyncTest(done => {
         const iframe = document.createElement("iframe");
         document.body.appendChild(iframe);
+
         iframe.contentWindow.addEventListener("beforeunload", e => {
             println("Before unload event fired");
             e.preventDefault();
             println(`Default prevented: ${e.defaultPrevented}`);
+        });
+
+        iframe.addEventListener("load", e => {
+            println(`iframe load: ${e.target.src}`);
             done();
         });
+
         iframe.src = "about:blank";
     });
 </script>