diff --git a/examples/function-calling/function-calling-anthropic-async-stream.py b/examples/function-calling/function-calling-anthropic-async-stream.py
index 953855da0..e96a56442 100644
--- a/examples/function-calling/function-calling-anthropic-async-stream.py
+++ b/examples/function-calling/function-calling-anthropic-async-stream.py
@@ -118,6 +118,7 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
 
     llm = AnthropicLLMService(
         api_key=os.getenv("ANTHROPIC_API_KEY"),
+        enable_async_tool_cancellation=True,
         settings=AnthropicLLMService.Settings(
             system_instruction=(
                 "You are a helpful assistant in a voice conversation. "
@@ -139,10 +140,6 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
         timeout_secs=30,
     )
 
-    @llm.event_handler("on_function_calls_started")
-    async def on_function_calls_started(service, function_calls):
-        await tts.queue_frame(TTSSpeakFrame("Sure, tracking your location now."))
-
     location_function = FunctionSchema(
         name="track_current_location",
         description="Start tracking the user's current GPS location, reporting position updates until the user reaches their destination.",