diff --git a/neutronclient/neutron/v2_0/router.py b/neutronclient/neutron/v2_0/router.py
index b431daaea..40584f20f 100644
--- a/neutronclient/neutron/v2_0/router.py
+++ b/neutronclient/neutron/v2_0/router.py
@@ -234,6 +234,9 @@ class SetGatewayRouter(neutronV20.NeutronCommand):
         parser.add_argument(
             'external_network', metavar='EXTERNAL-NETWORK',
             help=_('ID or name of the external network for the gateway.'))
+        parser.add_argument(
+            '--enable-snat', action='store_true',
+            help=_('Enable source NAT on the router gateway.'))
         parser.add_argument(
             '--disable-snat', action='store_true',
             help=_('Disable source NAT on the router gateway.'))
@@ -256,6 +259,8 @@ class SetGatewayRouter(neutronV20.NeutronCommand):
         _ext_net_id = neutronV20.find_resourceid_by_name_or_id(
             neutron_client, 'network', parsed_args.external_network)
         router_dict = {'network_id': _ext_net_id}
+        if parsed_args.enable_snat:
+            router_dict['enable_snat'] = True
         if parsed_args.disable_snat:
             router_dict['enable_snat'] = False
         if parsed_args.fixed_ip:
diff --git a/neutronclient/tests/unit/test_cli20_router.py b/neutronclient/tests/unit/test_cli20_router.py
index 1ca818de0..02a762ca3 100644
--- a/neutronclient/tests/unit/test_cli20_router.py
+++ b/neutronclient/tests/unit/test_cli20_router.py
@@ -356,6 +356,18 @@ class CLITestV20RouterJSON(test_cli20.CLITestV20Base):
                                     {"network_id": "externalid"}}
                                    )
 
+    def test_set_gateway_enable_snat(self):
+        # enable external gateway for router: myid externalid.
+        resource = 'router'
+        cmd = router.SetGatewayRouter(test_cli20.MyApp(sys.stdout), None)
+        args = ['myid', 'externalid', '--enable-snat']
+        self._test_update_resource(resource, cmd, 'myid',
+                                   args,
+                                   {"external_gateway_info":
+                                    {"network_id": "externalid",
+                                     "enable_snat": True}}
+                                   )
+
     def test_set_gateway_disable_snat(self):
         # set external gateway for router: myid externalid.
         resource = 'router'