diff --git a/tests/cli/main_tool.py b/tests/cli/main_tool.py
index 6c8c7dccf..4fe358dc4 100644
--- a/tests/cli/main_tool.py
+++ b/tests/cli/main_tool.py
@@ -2,7 +2,6 @@
 # -*- coding: utf-8 -*-
 """Tests the main tool functionality."""
 
-import unittest
 import logging
 import inspect