diff --git a/api/tests/unit_tests/services/test_schedule_service.py b/api/tests/unit_tests/services/test_schedule_service.py
index d5006bd5f26..aae37b885f0 100644
--- a/api/tests/unit_tests/services/test_schedule_service.py
+++ b/api/tests/unit_tests/services/test_schedule_service.py
@@ -5,7 +5,6 @@ from typing import Any
 from unittest.mock import MagicMock, Mock
 
 import pytest
-from sqlalchemy.orm import Session
 
 from core.trigger.constants import TRIGGER_SCHEDULE_NODE_TYPE
 from core.workflow.nodes.trigger_schedule.entities import VisualConfig
@@ -497,11 +496,6 @@ class TestScheduleWithTimezone(unittest.TestCase):
         assert summer_next.hour == 14
 
 
-@pytest.fixture
-def session_mock() -> MagicMock:
-    return MagicMock(spec=Session)
-
-
 def _workflow(**kwargs: Any) -> Workflow:
     graph_dict = kwargs.pop("graph_dict", {})
     workflow = Workflow.new(