diff --git a/tests/wpt/metadata/wasm/serialization/identity-not-preserved.html.ini b/tests/wpt/metadata/wasm/serialization/identity-not-preserved.html.ini
index 394cfbc06d7..1e92fb501c5 100644
--- a/tests/wpt/metadata/wasm/serialization/identity-not-preserved.html.ini
+++ b/tests/wpt/metadata/wasm/serialization/identity-not-preserved.html.ini
@@ -1,5 +1,5 @@
 [identity-not-preserved.html]
-  expected: TIMEOUT
+  expected: ERROR
   [postMessaging to this window does not give back the same WebAssembly.Module]
     expected: TIMEOUT