diff --git a/tests/unit/misc/test_lineparser.py b/tests/unit/misc/test_lineparser.py
index c8f5de217..7cf7a73b7 100644
--- a/tests/unit/misc/test_lineparser.py
+++ b/tests/unit/misc/test_lineparser.py
@@ -19,6 +19,7 @@
 
 """Tests for qutebrowser.misc.lineparser."""
 
+import os
 import pytest
 
 from qutebrowser.misc import lineparser as lineparsermod