diff --git a/tempest/api/volume/admin/test_volume_types.py b/tempest/api/volume/admin/test_volume_types.py
index 7202881..6fc6f1c 100644
--- a/tempest/api/volume/admin/test_volume_types.py
+++ b/tempest/api/volume/admin/test_volume_types.py
@@ -28,9 +28,6 @@
         self.volumes_client.delete_volume(volume_id)
         self.volumes_client.wait_for_resource_deletion(volume_id)
 
-    def _delete_volume_type(self, volume_type_id):
-        self.volume_types_client.delete_volume_type(volume_type_id)
-
     @test.idempotent_id('9d9b28e3-1b2e-4483-a2cc-24aa0ea1de54')
     def test_volume_type_list(self):
         # List volume types.
@@ -54,7 +51,8 @@
                 name=vol_type_name,
                 extra_specs=extra_specs)['volume_type']
             volume_types.append(vol_type)
-            self.addCleanup(self._delete_volume_type, vol_type['id'])
+            self.addCleanup(self.volume_types_client.delete_volume_type,
+                            vol_type['id'])
         params = {self.name_field: vol_name,
                   'volume_type': volume_types[0]['id']}
 
@@ -103,7 +101,8 @@
             name=name,
             extra_specs=extra_specs)['volume_type']
         self.assertIn('id', body)
-        self.addCleanup(self._delete_volume_type, body['id'])
+        self.addCleanup(self.volume_types_client.delete_volume_type,
+                        body['id'])
         self.assertIn('name', body)
         self.assertEqual(body['name'], name,
                          "The created volume_type name is not equal "
@@ -130,7 +129,8 @@
         name = data_utils.rand_name("volume-type")
         body = self.volume_types_client.create_volume_type(
             name=name)['volume_type']
-        self.addCleanup(self._delete_volume_type, body['id'])
+        self.addCleanup(self.volume_types_client.delete_volume_type,
+                        body['id'])
 
         # Create encryption type
         encryption_type = self.volume_types_client.create_encryption_type(