diff --git a/tests/test_reference.py b/tests/test_reference.py
index 05cc8a31..4cb4ed11 100644
--- a/tests/test_reference.py
+++ b/tests/test_reference.py
@@ -1,5 +1,4 @@
 """Test Robust Reference."""
-import random
 from unittest import mock
 
 import mne