diff --git a/tests/unit/mainwindow/test_tabwidget.py b/tests/unit/mainwindow/test_tabwidget.py
index bf7ffb383..6d5dd9cb5 100644
--- a/tests/unit/mainwindow/test_tabwidget.py
+++ b/tests/unit/mainwindow/test_tabwidget.py
@@ -71,4 +71,8 @@ class TestTabWidget:
         widget.addTab(page, icon, 'foobar')
         widget.show()
         qtbot.waitForWindowShown(widget)
+        # We need to call close() here because closing needs the stubbed config
+        # on OS X, but when qtbot closes it, the config stub is already gone.
+        # WORKAROUND for https://github.com/pytest-dev/pytest-qt/issues/106
+        # https://github.com/The-Compiler/qutebrowser/pull/1048#issuecomment-150660769
         widget.close()