diff --git a/pyrogram/session/session.py b/pyrogram/session/session.py
index 6479dfdd..a41ff5fa 100644
--- a/pyrogram/session/session.py
+++ b/pyrogram/session/session.py
@@ -197,7 +197,7 @@ class Session:
 
         if self.client and callable(self.client.disconnect_handler):
             try:
-                self.client.disconnect_handler(self.client)
+                await self.client.disconnect_handler(self.client)
             except Exception as e:
                 log.error(e, exc_info=True)