diff --git a/force_bdss/bdss_application.py b/force_bdss/bdss_application.py
index 00bcaaba60d36efff28987cd6155741772608178..9692874e4de64e3210bdc77916e267b3b5731122 100644
--- a/force_bdss/bdss_application.py
+++ b/force_bdss/bdss_application.py
@@ -37,8 +37,6 @@ class BDSSApplication(Application):
         else:
             plugins.append(CoreMCODriver())
 
-
-
         mgr = ExtensionManager(
             namespace='force.bdss.extensions',
             invoke_on_load=True,
diff --git a/force_bdss/tests/test_bdss_application.py b/force_bdss/tests/test_bdss_application.py
index ca09c523f2ee671aa57e7ccc1d13b54ad2949520..86482c7bb6e2d1337e5bc8153e3358d39c13ae8e 100644
--- a/force_bdss/tests/test_bdss_application.py
+++ b/force_bdss/tests/test_bdss_application.py
@@ -32,3 +32,13 @@ class TestBDSSApplication(unittest.TestCase):
                               "Exception. Message: hello")
         )
         self.assertEqual(plugins, [])
+
+    def test_import_extension(self):
+        plugins = []
+        plugin = mock.Mock()
+        ext = mock.Mock()
+        ext.obj = plugin
+        _import_extensions(plugins, ext)
+
+        self.assertEqual(plugins[0], plugin)
+