diff --git a/zaqarclient/queues/cli.py b/zaqarclient/queues/cli.py
index 4dcf2828..7636a31d 100644
--- a/zaqarclient/queues/cli.py
+++ b/zaqarclient/queues/cli.py
@@ -12,6 +12,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+"""OpenStackClient plugin for Messaging service."""
+
 import logging
 
 from osc_lib import utils