diff --git a/test/agentchat/test_function_call.py b/test/agentchat/test_function_call.py
index 5ca82d3ff5..5dfcd839f3 100755
--- a/test/agentchat/test_function_call.py
+++ b/test/agentchat/test_function_call.py
@@ -215,6 +215,7 @@ def __init__(self, given_num):
         def add(self, num_to_be_added):
             self.given_num = num_to_be_added + self.given_num
             return str(self.given_num)
+
     user = UserProxyAgent(name="test", function_map={"add_num": AddNum(given_num=10).add})
     func_call = {"name": "add_num", "arguments": '{ "num_to_be_added": 5 }'}
     assert (await user.a_execute_function(func_call=func_call))[1]["content"] == "15"