diff --git a/dislocker_client.py b/dislocker_client.py
index 4145871..a690366 100644
--- a/dislocker_client.py
+++ b/dislocker_client.py
@@ -88,7 +88,8 @@ def init(**kwargs):
 
         if responce.status_code == 200:
             print("PCの情報が登録されました。")
-            pc_token = str(responce.json["pc_token"])
+            responce_json = responce.json()
+            pc_token = str(responce_json["pc_token"])
             client_config["pc_token"] = pc_token
 
             master_password = master_password_gen()