diff --git a/tests-unit/app_test/custom_node_manager_test.py b/tests-unit/app_test/custom_node_manager_test.py
index 8df9d5225..89598de84 100644
--- a/tests-unit/app_test/custom_node_manager_test.py
+++ b/tests-unit/app_test/custom_node_manager_test.py
@@ -1,5 +1,4 @@
 import pytest
-import json
 from aiohttp import web
 from unittest.mock import patch
 from app.custom_node_manager import CustomNodeManager