diff --git a/src/google/adk/evaluation/local_eval_service.py b/src/google/adk/evaluation/local_eval_service.py
index ab285e1836..09a08d37bb 100644
--- a/src/google/adk/evaluation/local_eval_service.py
+++ b/src/google/adk/evaluation/local_eval_service.py
@@ -130,7 +130,7 @@ async def perform_inference(
 
     async def run_inference(eval_case):
       async with semaphore:
-        return await self._perform_inference_sigle_eval_item(
+        return await self._perform_inference_single_eval_item(
             app_name=inference_request.app_name,
             eval_set_id=inference_request.eval_set_id,
             eval_case=eval_case,
@@ -383,7 +383,7 @@ def _generate_final_eval_status(
 
     return final_eval_status
 
-  async def _perform_inference_sigle_eval_item(
+  async def _perform_inference_single_eval_item(
       self,
       app_name: str,
       eval_set_id: str,
diff --git a/tests/unittests/evaluation/test_local_eval_service.py b/tests/unittests/evaluation/test_local_eval_service.py
index 8d973c92da..df90bf39dc 100644
--- a/tests/unittests/evaluation/test_local_eval_service.py
+++ b/tests/unittests/evaluation/test_local_eval_service.py
@@ -174,7 +174,7 @@ async def test_perform_inference_success(
   mock_eval_sets_manager.get_eval_set.return_value = eval_set
 
   mock_inference_result = mocker.MagicMock()
-  eval_service._perform_inference_sigle_eval_item = mocker.AsyncMock(
+  eval_service._perform_inference_single_eval_item = mocker.AsyncMock(
       return_value=mock_inference_result
   )
 
@@ -194,7 +194,7 @@ async def test_perform_inference_success(
   mock_eval_sets_manager.get_eval_set.assert_called_once_with(
       app_name="test_app", eval_set_id="test_eval_set"
   )
-  assert eval_service._perform_inference_sigle_eval_item.call_count == 2
+  assert eval_service._perform_inference_single_eval_item.call_count == 2
 
 
 @pytest.mark.asyncio
@@ -215,7 +215,7 @@ async def test_perform_inference_with_case_ids(
   mock_eval_sets_manager.get_eval_set.return_value = eval_set
 
   mock_inference_result = mocker.MagicMock()
-  eval_service._perform_inference_sigle_eval_item = mocker.AsyncMock(
+  eval_service._perform_inference_single_eval_item = mocker.AsyncMock(
       return_value=mock_inference_result
   )
 
@@ -231,13 +231,13 @@ async def test_perform_inference_with_case_ids(
     results.append(result)
 
   assert len(results) == 2
-  eval_service._perform_inference_sigle_eval_item.assert_any_call(
+  eval_service._perform_inference_single_eval_item.assert_any_call(
       app_name="test_app",
       eval_set_id="test_eval_set",
       eval_case=eval_set.eval_cases[0],
       root_agent=dummy_agent,
   )
-  eval_service._perform_inference_sigle_eval_item.assert_any_call(
+  eval_service._perform_inference_single_eval_item.assert_any_call(
       app_name="test_app",
       eval_set_id="test_eval_set",
       eval_case=eval_set.eval_cases[2],