diff --git a/tests/tools.py b/tests/tools.py
index 65128cc9..b375f671 100644
--- a/tests/tools.py
+++ b/tests/tools.py
@@ -23,8 +23,6 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
 import os
 import shutil
 
-from itertools import chain
-
 from PyQt5.QtWidgets import qApp
 
 def cmpFiles(fileOne, fileTwo, ignoreLines=None):