diff --git a/aio/firebase.json b/aio/firebase.json
index 40ba778e18..7604fbf851 100644
--- a/aio/firebase.json
+++ b/aio/firebase.json
@@ -7,7 +7,7 @@
     "cleanUrls": true,
     "rewrites": [
       {
-        "source": "**",
+        "source": "**/!(*.*)",
         "destination": "/index.html"
       }
     ]