diff --git a/pyrogram/client/ext/base_client.py b/pyrogram/client/ext/base_client.py
index 80b719af..d7414530 100644
--- a/pyrogram/client/ext/base_client.py
+++ b/pyrogram/client/ext/base_client.py
@@ -126,5 +126,5 @@ class BaseClient:
     async def get_chat_members(self, *args, **kwargs):
         pass
 
-    def get_chat_members_count(self, *args, **kwargs):
+    async def get_chat_members_count(self, *args, **kwargs):
         pass
diff --git a/pyrogram/client/methods/chats/iter_chat_members.py b/pyrogram/client/methods/chats/iter_chat_members.py
index d1ac8d6a..ce923b65 100644
--- a/pyrogram/client/methods/chats/iter_chat_members.py
+++ b/pyrogram/client/methods/chats/iter_chat_members.py
@@ -88,7 +88,7 @@ class IterChatMembers(BaseClient):
 
         filter = (
             Filters.RECENT
-            if self.get_chat_members_count(chat_id) <= 10000 and filter == Filters.ALL
+            if await self.get_chat_members_count(chat_id) <= 10000 and filter == Filters.ALL
             else filter
         )