diff --git a/pyrogram/client/ext/base_client.py b/pyrogram/client/ext/base_client.py
index 7e9f51a1..ae05c1f2 100644
--- a/pyrogram/client/ext/base_client.py
+++ b/pyrogram/client/ext/base_client.py
@@ -26,7 +26,7 @@ from ...session.internals import MsgId
 
 
 class BaseClient:
-    class StopTransmission(StopIteration):
+    class StopTransmission(StopAsyncIteration):
         pass
 
     APP_VERSION = "Pyrogram \U0001f525 {}".format(__version__)