diff --git a/networking_bgpvpn/neutronclient/neutron/v2_0/bgpvpn/bgpvpn.py b/networking_bgpvpn/neutronclient/neutron/v2_0/bgpvpn/bgpvpn.py
index e233a44e..1cdca5a1 100755
--- a/networking_bgpvpn/neutronclient/neutron/v2_0/bgpvpn/bgpvpn.py
+++ b/networking_bgpvpn/neutronclient/neutron/v2_0/bgpvpn/bgpvpn.py
@@ -29,9 +29,9 @@ class BGPVPN(extension.NeutronClientExtension):
 versions = ['2.0']
 
 
-class BGPVPNCommandsCommonMixin(object):
+class BGPVPNCreateUpdateCommon(BGPVPN):
 
- def add_common_known_args(self, parser):
+ def add_known_args(self, parser):
 """Adds to parser arguments common to create and update commands."""
 
 parser.add_argument(
@@ -75,16 +75,15 @@ class BGPVPNCommandsCommonMixin(object):
 return body
 
 
-class BGPVPNCreate(extension.ClientExtensionCreate,
- BGPVPN,
- BGPVPNCommandsCommonMixin
- ):
+class BGPVPNCreate(BGPVPNCreateUpdateCommon,
+ extension.ClientExtensionCreate):
 shell_command = 'bgpvpn-create'
 
 def add_known_arguments(self, parser):
 
- BGPVPNCommandsCommonMixin.add_common_known_args(self, parser)
+ BGPVPNCreateUpdateCommon.add_known_args(self, parser)
 
+ # type is read-only, hence specific to create
 parser.add_argument(
 '--type',
 default='l3', choices=['l2', 'l3'],
@@ -92,9 +91,8 @@ class BGPVPNCreate(extension.ClientExtensionCreate,
 'EVPN (l2), default:l3'))
 
 
-class BGPVPNConnectionUpdate(extension.ClientExtensionUpdate,
- BGPVPN,
- BGPVPNCommandsCommonMixin):
+class BGPVPNConnectionUpdate(BGPVPNCreateUpdateCommon,
+ extension.ClientExtensionUpdate):
 shell_command = 'bgpvpn-update'
 
 
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