diff --git a/__init__.py b/__init__.py
index 57939c5..bbce1e0 100644
--- a/__init__.py
+++ b/__init__.py
@@ -32,7 +32,7 @@ def create_flag_if_missing(challenge_id: int, user_id: int, flag_content: str):
         db.session.commit()
         return new_flag.id
 
-    return flag
+    return flag.id
 
 
 @bp.route("/admin/cheaters", methods=["GET"])