diff --git a/generate-firebase-json.js b/generate-firebase-json.js
index 45a5254..a34db49 100644
--- a/generate-firebase-json.js
+++ b/generate-firebase-json.js
@@ -40,7 +40,7 @@ const generateFirebaseJson = (
 ) => {
     const sourceGlob = htmlPluginData.outputName
         .replace(/\.html/, '')
-        .replace(/index/, '@(/|index)')
+        .replace(/index/, '/')
       //  .replace(/404\.html/, '**/*')
        // .replace(/index\.html/, '\/?(index.html)?')
        // .replace(/\.html/, '(\\.html)?')