diff --git a/python/alibabacloud_tea_util/client.py b/python/alibabacloud_tea_util/client.py
index aca92329..ca6fbea6 100644
--- a/python/alibabacloud_tea_util/client.py
+++ b/python/alibabacloud_tea_util/client.py
@@ -101,7 +101,7 @@ async def read_as_bytes_async(stream) -> bytes:
         elif isinstance(stream, str):
             return bytes(stream, encoding='utf-8')
         else:
-            return await stream.read()
+            return stream.read()
 
     @staticmethod
     async def read_as_string_async(stream) -> str: