diff --git a/rpi/controllers/GameController.py b/rpi/controllers/GameController.py
index c2de21ff..c79ab79a 100644
--- a/rpi/controllers/GameController.py
+++ b/rpi/controllers/GameController.py
@@ -42,7 +42,7 @@ class GameController:
     def make_move(self):
         try:
             if not self._has_started:
-                jsonify({"status": "error", "message": "Game hasn't started yet"}), 400
+                return jsonify({"status": "error", "message": "Game hasn't started yet"}), 400
 
             auth_token = request.headers.get("Authorization")
             if auth_token != "Bearer " + self._auth_token: