diff --git a/openhands/agenthub/codeact_agent/function_calling.py b/openhands/agenthub/codeact_agent/function_calling.py
index 1b8a34fff2..023acca660 100644
--- a/openhands/agenthub/codeact_agent/function_calling.py
+++ b/openhands/agenthub/codeact_agent/function_calling.py
@@ -199,7 +199,7 @@ def response_to_actions(response: ModelResponse) -> list[Action]:
             # ================================================
             elif tool_call.function.name.endswith(MCPClientTool.postfix()):
                 action = McpAction(
-                    name=tool_call.function.name.rstrip(MCPClientTool.postfix()),
+                    name=tool_call.function.name.removesuffix(MCPClientTool.postfix()),
                     arguments=tool_call.function.arguments,
                 )
             else: