diff --git a/dislocker_auth.py b/dislocker_auth.py
index 6befeae..c819015 100644
--- a/dislocker_auth.py
+++ b/dislocker_auth.py
@@ -304,9 +304,6 @@ class Auth():
             cursor = self.db.cursor()
             pc_number = int(kwargs["pc_number"])
             pc_uuid = str(kwargs["pc_uuid"])
-            cursor.execute("SELECT pc_uuid FROM pc_list WHERE pc_number = %s", (pc_number,))
-            pc_record_uuid_source = cursor.fetchall()
-            pc_record_uuid = pc_record_uuid_source[0][0]
             cursor.execute("SELECT pc_number FROM pc_list WHERE pc_number = %s", (pc_number,))
             pc_record_number_source = cursor.fetchall()
             
@@ -318,6 +315,9 @@ class Auth():
                 self.db.commit()
                 return {"result": 0, "about": "ok", "output_dict": {"pc_token": pc_token, "master_password": master_password, "master_password_hash": master_password_hash}}
             else:
+                cursor.execute("SELECT pc_uuid FROM pc_list WHERE pc_number = %s", (pc_number,))
+                pc_record_uuid_source = cursor.fetchall()
+                pc_record_uuid = pc_record_uuid_source[0][0]
                 if pc_record_uuid == None:
                     pc_token = self.token_generate(36)
                     master_password = self.master_password_generate(16)