diff --git a/resources/testdriver.js b/resources/testdriver.js
index 2fef36d5eef974..75ceb72db12357 100644
--- a/resources/testdriver.js
+++ b/resources/testdriver.js
@@ -983,7 +983,7 @@
         },
 
         async consume_user_activation () {
-            throw new Error("Consume_user_activation() is not implemented by testdriver-vendor.js");
+            throw new Error("consume_user_activation() is not implemented by testdriver-vendor.js");
         },
     };
 })();