diff --git a/tests/tools/test_custom_tool_invocation.py b/tests/tools/test_custom_tool_invocation.py
index b92636276..b42bcd88e 100644
--- a/tests/tools/test_custom_tool_invocation.py
+++ b/tests/tools/test_custom_tool_invocation.py
@@ -51,8 +51,7 @@ def test_custom_tool_invocation():
         tool="Test Custom Tool",
         tool_input={"test_param": "test_value"},
         thought="I'll use the custom tool",
-        text="I'll use the Test Custom Tool to get a result",
-        message_log=[]
+        text="I'll use the Test Custom Tool to get a result"
     )
     
     result = executor._execute_tool_and_check_finality(action)