diff --git a/tests/wpt/harness/wptrunner/testharnessreport-servo.js b/tests/wpt/harness/wptrunner/testharnessreport-servo.js
index d1b316761709..6464436c3397 100644
--- a/tests/wpt/harness/wptrunner/testharnessreport-servo.js
+++ b/tests/wpt/harness/wptrunner/testharnessreport-servo.js
@@ -8,7 +8,7 @@ setup(props);
 
 add_completion_callback(function (tests, harness_status) {
     var id = location.pathname + location.search + location.hash;
-    alert("RESULT: " + JSON.stringify([
+    console.log("ALERT: RESULT: " + JSON.stringify([
         id,
         harness_status.status,
         harness_status.message,