diff --git a/tests/interfaces/openlp_core_lib/test_pluginmanager.py b/tests/interfaces/openlp_core_lib/test_pluginmanager.py
index 8dee9d1ac..c1b7348f9 100644
--- a/tests/interfaces/openlp_core_lib/test_pluginmanager.py
+++ b/tests/interfaces/openlp_core_lib/test_pluginmanager.py
@@ -69,5 +69,4 @@ class TestPluginManager(TestCase):
         assert 'songusage' in plugin_names, 'There should be a "songusage" plugin.'
         assert 'alerts' in plugin_names, 'There should be a "alerts" plugin.'
         assert 'remotes' in plugin_names, 'There should be a "remotes" plugin.'
-        del plugin_manager