diff --git a/infra/db.bicep b/infra/db.bicep
index 11310419ee..6c2f9dadd3 100644
--- a/infra/db.bicep
+++ b/infra/db.bicep
@@ -10,7 +10,7 @@ param containers array = [
   {
     name: collectionName
     id: collectionName
-    partitionKey: '/id'
+    partitionKey: '/userId'
   }
 ]