diff --git a/tests/wpt/mozilla/meta-layout-2020/mozilla/localeCompare.html.ini b/tests/wpt/mozilla/meta-layout-2020/mozilla/localeCompare.html.ini
index 3fe82b2eb0b..cd00e6e41a4 100644
--- a/tests/wpt/mozilla/meta-layout-2020/mozilla/localeCompare.html.ini
+++ b/tests/wpt/mozilla/meta-layout-2020/mozilla/localeCompare.html.ini
@@ -1,2 +1,4 @@
 [localeCompare.html]
   bug: https://github.com/servo/servo/issues/25802
+  [localeCompare should return the same as other browsers, even though it's implementation-dependent]
+    expected: FAIL