diff --git a/tempest/api/compute/base.py b/tempest/api/compute/base.py
index de8b312..42cb040 100644
--- a/tempest/api/compute/base.py
+++ b/tempest/api/compute/base.py
@@ -231,6 +231,7 @@
         cls.servers_client = cls.os.servers_v3_client
         cls.images_client = cls.os.image_client
         cls.services_client = cls.os.services_v3_client
+        cls.extensions_client = cls.os.extensions_v3_client
 
     @classmethod
     def create_image_from_server(cls, server_id, **kwargs):
diff --git a/tempest/api/compute/v3/test_extensions.py b/tempest/api/compute/v3/test_extensions.py
index 8f1e446..d7269d1 100644
--- a/tempest/api/compute/v3/test_extensions.py
+++ b/tempest/api/compute/v3/test_extensions.py
@@ -20,7 +20,7 @@
 from tempest.test import attr
 
 
-class ExtensionsTestJSON(base.BaseV2ComputeTest):
+class ExtensionsV3TestJSON(base.BaseV3ComputeTest):
     _interface = 'json'
 
     @attr(type='gate')
@@ -31,5 +31,5 @@
         self.assertEqual(200, resp.status)
 
 
-class ExtensionsTestXML(ExtensionsTestJSON):
+class ExtensionsV3TestXML(ExtensionsV3TestJSON):
     _interface = 'xml'
diff --git a/tempest/clients.py b/tempest/clients.py
index 4c39bb1..a52ed5d 100644
--- a/tempest/clients.py
+++ b/tempest/clients.py
@@ -48,10 +48,14 @@
     TenantUsagesClientJSON
 from tempest.services.compute.json.volumes_extensions_client import \
     VolumesExtensionsClientJSON
+from tempest.services.compute.v3.json.extensions_client import \
+    ExtensionsV3ClientJSON
 from tempest.services.compute.v3.json.servers_client import \
     ServersV3ClientJSON
 from tempest.services.compute.v3.json.services_client import \
     ServicesV3ClientJSON
+from tempest.services.compute.v3.xml.extensions_client import \
+    ExtensionsV3ClientXML
 from tempest.services.compute.v3.xml.servers_client import ServersV3ClientXML
 from tempest.services.compute.v3.xml.services_client import \
     ServicesV3ClientXML
@@ -185,6 +189,7 @@
             self.keypairs_client = KeyPairsClientXML(*client_args)
             self.quotas_client = QuotasClientXML(*client_args)
             self.flavors_client = FlavorsClientXML(*client_args)
+            self.extensions_v3_client = ExtensionsV3ClientXML(*client_args)
             self.extensions_client = ExtensionsClientXML(*client_args)
             self.volumes_extensions_client = VolumesExtensionsClientXML(
                 *client_args)
@@ -226,6 +231,7 @@
             self.keypairs_client = KeyPairsClientJSON(*client_args)
             self.quotas_client = QuotasClientJSON(*client_args)
             self.flavors_client = FlavorsClientJSON(*client_args)
+            self.extensions_v3_client = ExtensionsV3ClientJSON(*client_args)
             self.extensions_client = ExtensionsClientJSON(*client_args)
             self.volumes_extensions_client = VolumesExtensionsClientJSON(
                 *client_args)
diff --git a/tempest/services/compute/v3/json/extensions_client.py b/tempest/services/compute/v3/json/extensions_client.py
index ce46a9b..60c0217 100644
--- a/tempest/services/compute/v3/json/extensions_client.py
+++ b/tempest/services/compute/v3/json/extensions_client.py
@@ -20,12 +20,13 @@
 from tempest.common.rest_client import RestClient
 
 
-class ExtensionsClientJSON(RestClient):
+class ExtensionsV3ClientJSON(RestClient):
 
     def __init__(self, config, username, password, auth_url, tenant_name=None):
-        super(ExtensionsClientJSON, self).__init__(config, username, password,
-                                                   auth_url, tenant_name)
-        self.service = self.config.compute.catalog_type
+        super(ExtensionsV3ClientJSON, self).__init__(config, username,
+                                                     password, auth_url,
+                                                     tenant_name)
+        self.service = self.config.compute.catalog_v3_type
 
     def list_extensions(self):
         url = 'extensions'
diff --git a/tempest/services/compute/v3/xml/extensions_client.py b/tempest/services/compute/v3/xml/extensions_client.py
index 1395b5a..e03251c 100644
--- a/tempest/services/compute/v3/xml/extensions_client.py
+++ b/tempest/services/compute/v3/xml/extensions_client.py
@@ -20,12 +20,12 @@
 from tempest.services.compute.xml.common import xml_to_json
 
 
-class ExtensionsClientXML(RestClientXML):
+class ExtensionsV3ClientXML(RestClientXML):
 
     def __init__(self, config, username, password, auth_url, tenant_name=None):
-        super(ExtensionsClientXML, self).__init__(config, username, password,
-                                                  auth_url, tenant_name)
-        self.service = self.config.compute.catalog_type
+        super(ExtensionsV3ClientXML, self).__init__(config, username, password,
+                                                    auth_url, tenant_name)
+        self.service = self.config.compute.catalog_v3_type
 
     def _parse_array(self, node):
         array = []