diff --git a/dislocker_auth.py b/dislocker_auth.py
index 64b4f65..72bcce6 100644
--- a/dislocker_auth.py
+++ b/dislocker_auth.py
@@ -240,8 +240,8 @@ def verify():
 @app.route('/stop', methods=['POST'])
 def stop():
     pc_number = int(request.json.get('pc_number'))
-    pc_uuid = request.json.get('pc_uuid')
-    pc_token = request.json.get('pc_token')
+    pc_uuid = str(request.json.get('pc_uuid'))
+    pc_token = str(request.json.get('pc_token'))
     print(str(pc_number) + "の使用停止処理を開始...")
 
     pc_auth = auth.check(pc_number=pc_number, pc_uuid=pc_uuid, pc_token=pc_token)