diff --git a/HACKING.rst b/HACKING.rst
index 79ebc4d..8407734 100644
--- a/HACKING.rst
+++ b/HACKING.rst
@@ -103,10 +103,10 @@
 Service Tagging
 ---------------
 Service tagging is used to specify which services are exercised by a particular
-test method. You specify the services with the ``tempest.test.services``
+test method. You specify the services with the ``tempest.common.utils.services``
 decorator. For example:
 
-@services('compute', 'image')
+@utils.services('compute', 'image')
 
 Valid service tag names are the same as the list of directories in tempest.api
 that have tests.
diff --git a/tempest/api/compute/base.py b/tempest/api/compute/base.py
index ab7ade9..683d3e9 100644
--- a/tempest/api/compute/base.py
+++ b/tempest/api/compute/base.py
@@ -245,18 +245,6 @@
                 return
             time.sleep(self.build_interval)
 
-    @staticmethod
-    def _delete_volume(volumes_client, volume_id):
-        """Deletes the given volume and waits for it to be gone."""
-        try:
-            volumes_client.delete_volume(volume_id)
-            # TODO(mriedem): We should move the wait_for_resource_deletion
-            # into the delete_volume method as a convenience to the caller.
-            volumes_client.wait_for_resource_deletion(volume_id)
-        except lib_exc.NotFound:
-            LOG.warning("Unable to delete volume '%s' since it was not found. "
-                        "Maybe it was already deleted?", volume_id)
-
     @classmethod
     def prepare_instance_network(cls):
         if (CONF.validation.auth_method != 'disabled' and
@@ -364,7 +352,14 @@
     @classmethod
     def delete_volume(cls, volume_id):
         """Deletes the given volume and waits for it to be gone."""
-        cls._delete_volume(cls.volumes_client, volume_id)
+        try:
+            cls.volumes_client.delete_volume(volume_id)
+            # TODO(mriedem): We should move the wait_for_resource_deletion
+            # into the delete_volume method as a convenience to the caller.
+            cls.volumes_client.wait_for_resource_deletion(volume_id)
+        except lib_exc.NotFound:
+            LOG.warning("Unable to delete volume '%s' since it was not found. "
+                        "Maybe it was already deleted?", volume_id)
 
     @classmethod
     def get_server_ip(cls, server, validation_resources=None):