diff --git a/tests/Settings/TestGlobalStack.py b/tests/Settings/TestGlobalStack.py
index 3edafc286a..620f35bded 100644
--- a/tests/Settings/TestGlobalStack.py
+++ b/tests/Settings/TestGlobalStack.py
@@ -4,7 +4,6 @@
 import os.path #To find the test files.
 import pytest #This module contains unit tests.
 import unittest.mock #To monkeypatch some mocks in place of dependencies.
-import copy
 import functools
 
 import cura.Settings.GlobalStack #The module we're testing.