diff --git a/test/test_ui_commands.py b/test/test_ui_commands.py
index 05da727fd..ff0aa96a5 100644
--- a/test/test_ui_commands.py
+++ b/test/test_ui_commands.py
@@ -30,8 +30,6 @@ class QueryTest(_common.TestCase):
     def setUp(self):
         super(QueryTest, self).setUp()
 
-        self.io.install()
-
         self.libdir = os.path.join(self.temp_dir, 'testlibdir')
         os.mkdir(self.libdir)