diff --git a/index.json b/index.json
index 41560285..e4e40c3c 100644
--- a/index.json
+++ b/index.json
@@ -11453,7 +11453,7 @@
       "alternateUrls": [],
       "repository": "https://github.com/w3ctag/promises-guide",
       "sourcePath": "index.bs",
-      "filename": "index.html"
+      "filename": "Overview.html"
     },
     "title": "Writing Promise-Using Specifications",
     "source": "specref",