diff --git a/elo_tracker/app.py b/elo_tracker/app.py
index a8a0298..597654c 100644
--- a/elo_tracker/app.py
+++ b/elo_tracker/app.py
@@ -502,7 +502,7 @@ class EloTracker:
   <script>
     var app = Elm.EloTracker.init({
         node: document.body,
-        flag: { baseUrl: "" }
+        flags: { baseUrl: "" }
     });
   </script>
 </html>