diff --git a/reddwarfclient/client.py b/reddwarfclient/client.py
index 0c8a3870..61374d08 100644
--- a/reddwarfclient/client.py
+++ b/reddwarfclient/client.py
@@ -184,7 +184,7 @@ class ReddwarfHTTPClient(httplib2.Http):
         else:
             body = None
 
-        if resp.status in (400, 401, 403, 404, 408, 409, 413, 500, 501):
+        if resp.status in (400, 401, 403, 404, 408, 409, 413, 422, 500, 501):
             raise exceptions.from_response(resp, body)
 
         return resp, body
diff --git a/reddwarfclient/mcli.py b/reddwarfclient/mcli.py
index a9df52bb..2e3a161c 100644
--- a/reddwarfclient/mcli.py
+++ b/reddwarfclient/mcli.py
@@ -71,7 +71,8 @@ class QuotaCommands(common.AuthedCommandsBase):
 
     params = ['id',
               'instances',
-              'volumes']
+              'volumes',
+              'backups']
 
     def list(self):
         """List all quotas for a tenant"""