diff --git a/test/intl402/Locale/likely-subtags-grandfathered.js b/test/intl402/Locale/likely-subtags-grandfathered.js
index 713cbd85c3ec0fce86487714eb81c1adeb420776..1f22ed9e3afd74ccf8b46f038ccb169e0802e342 100644
--- a/test/intl402/Locale/likely-subtags-grandfathered.js
+++ b/test/intl402/Locale/likely-subtags-grandfathered.js
@@ -66,10 +66,6 @@ const regularGrandfathered = [
         canonical: "jbo",
         maximized: "jbo-Latn-001",
     },
-    {
-        tag: "cel-gaulish",
-        canonical: "cel-gaulish",
-    },
     {
         tag: "zh-guoyu",
         canonical: "cmn",