diff --git a/zaqar/tests/tempest_plugin/config.py b/zaqar/tests/tempest_plugin/config.py
index 00ae868..eb7c5b6 100644
--- a/zaqar/tests/tempest_plugin/config.py
+++ b/zaqar/tests/tempest_plugin/config.py
@@ -18,7 +18,7 @@ from oslo_config import cfg
 service_option = cfg.BoolOpt('zaqar',
                              default=True,
                              help="Whether or not Zaqar is expected to be "
-                                  "available"),
+                                  "available")
 
 messaging_group = cfg.OptGroup(name='messaging',
                                title='Messaging Service')
diff --git a/zaqar/tests/tempest_plugin/plugin.py b/zaqar/tests/tempest_plugin/plugin.py
index 86f796a..70ffad4 100644
--- a/zaqar/tests/tempest_plugin/plugin.py
+++ b/zaqar/tests/tempest_plugin/plugin.py
@@ -35,8 +35,8 @@ class ZaqarTempestPlugin(plugins.TempestPlugin):
     def register_opts(self, conf):
         conf.register_group(zaqar_config.messaging_group)
         conf.register_opts(zaqar_config.MessagingGroup, group='messaging')
-        conf.register_opts(zaqar_config.service_option,
-                           group='service_available')
+        conf.register_opt(zaqar_config.service_option,
+                          group='service_available')
 
     def get_opt_lists(self):
         return [('messaging', zaqar_config.MessagingGroup),