diff --git a/pyrogram/session/session.py b/pyrogram/session/session.py
index 64c7de8967..d4b9f6c6ee 100644
--- a/pyrogram/session/session.py
+++ b/pyrogram/session/session.py
@@ -142,7 +142,7 @@ async def start(self):
                 log.info("Session initialized: Layer %s", layer)
                 log.info("Device: %s - %s", self.client.device_model, self.client.app_version)
                 log.info("System: %s (%s)", self.client.system_version, self.client.lang_code)
-            except AuthKeyDuplicated as e:
+            except (AuthKeyDuplicated, Unauthorized) as e:
                 await self.stop()
                 raise e
             except (OSError, RPCError):