diff --git a/tempest/api/compute/admin/test_fixed_ips.py b/tempest/api/compute/admin/test_fixed_ips.py
index 895f773..85b03e6 100644
--- a/tempest/api/compute/admin/test_fixed_ips.py
+++ b/tempest/api/compute/admin/test_fixed_ips.py
@@ -21,42 +21,29 @@
 from tempest.test import attr
 
 
-class FixedIPsBase(base.BaseComputeAdminTest):
-    _interface = 'json'
-    ip = None
-
-    @classmethod
-    def setUpClass(cls):
-        super(FixedIPsBase, cls).setUpClass()
-        if cls.config.service_available.neutron:
-            msg = ("%s skipped as neutron is available" % cls.__name__)
-            raise cls.skipException(msg)
-        # NOTE(maurosr): The idea here is: the server creation is just an
-        # auxiliary element to the ip details or reservation, there was no way
-        # (at least none in my mind) to get an valid and existing ip except
-        # by creating a server and using its ip. So the intention is to create
-        # fewer server possible (one) and use it to both: json and xml tests.
-        # This decreased time to run both tests, in my test machine, from 53
-        # secs to 29 (agains 23 secs when running only json tests)
-        if cls.ip is None:
-            cls.client = cls.os_adm.fixed_ips_client
-            cls.non_admin_client = cls.fixed_ips_client
-            resp, server = cls.create_server(wait_until='ACTIVE')
-            resp, server = cls.servers_client.get_server(server['id'])
-            for ip_set in server['addresses']:
-                for ip in server['addresses'][ip_set]:
-                    if ip['OS-EXT-IPS:type'] == 'fixed':
-                        cls.ip = ip['addr']
-                        break
-                if cls.ip:
-                    break
-
-
-class FixedIPsTestJson(FixedIPsBase):
+class FixedIPsTestJson(base.BaseComputeAdminTest):
     _interface = 'json'
 
     CONF = config.TempestConfig()
 
+    @classmethod
+    def setUpClass(cls):
+        super(FixedIPsTestJson, cls).setUpClass()
+        if cls.config.service_available.neutron:
+            msg = ("%s skipped as neutron is available" % cls.__name__)
+            raise cls.skipException(msg)
+        cls.client = cls.os_adm.fixed_ips_client
+        cls.non_admin_client = cls.fixed_ips_client
+        resp, server = cls.create_server(wait_until='ACTIVE')
+        resp, server = cls.servers_client.get_server(server['id'])
+        for ip_set in server['addresses']:
+            for ip in server['addresses'][ip_set]:
+                if ip['OS-EXT-IPS:type'] == 'fixed':
+                    cls.ip = ip['addr']
+                    break
+            if cls.ip:
+                break
+
     @attr(type='gate')
     def test_list_fixed_ip_details(self):
         resp, fixed_ip = self.client.get_fixed_ip_details(self.ip)