diff --git a/components/script/dom/servoparser/mod.rs b/components/script/dom/servoparser/mod.rs
index 7cadab84d04..eb1e12c33d4 100644
--- a/components/script/dom/servoparser/mod.rs
+++ b/components/script/dom/servoparser/mod.rs
@@ -872,7 +872,7 @@ impl TreeSink for Sink {
             control.set_form_owner_from_parser(&form);
         } else {
             // TODO remove this code when keygen is implemented.
-            assert!(node.NodeName() == "KEYGEN", "Unknown form-associatable element");
+            assert_eq!(node.NodeName(), "KEYGEN", "Unknown form-associatable element");
         }
     }