diff --git a/seatconnect/connection.py b/seatconnect/connection.py
index 8d39a39..4af0ffa 100644
--- a/seatconnect/connection.py
+++ b/seatconnect/connection.py
@@ -708,7 +708,7 @@ async def get_vehicles(self):
             # Try new pyJWT syntax if old fails
             if subject is None:
                 try:
-                    exp = jwt.decode(atoken, options={'verify_signature': False}).get('sub', None)
+                    subject = jwt.decode(atoken, options={'verify_signature': False}).get('sub', None)
                 except:
                     raise Exception("Could not extract sub attribute from token")
             legacy_vehicles = await self.get(