diff --git a/components/git/wpt.js b/components/git/wpt.js
index f5d1b22c..66c8784b 100644
--- a/components/git/wpt.js
+++ b/components/git/wpt.js
@@ -52,7 +52,7 @@ async function main(argv) {
   if (fs.existsSync(statusFolder)) {
     const jsons = fs.readdirSync(statusFolder);
     supported = supported.concat(
-      jsons.map(item => item.replace('.json', '')));
+      jsons.map(item => path.basename(item, path.extname(item))));
   } else {
     cli.warn(`Please create the status JSON files in ${statusFolder}`);
   }