diff --git a/telethon/network/mtprotosender.py b/telethon/network/mtprotosender.py
index 7d8dfd13..16e00b18 100644
--- a/telethon/network/mtprotosender.py
+++ b/telethon/network/mtprotosender.py
@@ -386,7 +386,6 @@ class MTProtoSender:
                 except asyncio.TimeoutError:
                     continue
                 except asyncio.CancelledError:
-                    await self.disconnect()
                     return
                 except Exception as e:
                     if isinstance(e, ConnectionError):
@@ -426,7 +425,6 @@ class MTProtoSender:
             except asyncio.TimeoutError:
                 continue
             except asyncio.CancelledError:
-                await self.disconnect()
                 return
             except Exception as e:
                 if isinstance(e, ConnectionError):
@@ -470,7 +468,6 @@ class MTProtoSender:
                              .format(e.invalid_constructor_id, e.remaining))
                 continue
             except asyncio.CancelledError:
-                await self.disconnect()
                 return
             except Exception as e:
                 __log__.exception('Unhandled exception while unpacking %s',e)
@@ -479,7 +476,6 @@ class MTProtoSender:
                 try:
                     await self._process_message(message)
                 except asyncio.CancelledError:
-                    await self.disconnect()
                     return
                 except Exception as e:
                     __log__.exception('Unhandled exception while '