diff --git a/tempest/tests/compute/base.py b/tempest/tests/compute/base.py
index a79f7f5..4040705 100644
--- a/tempest/tests/compute/base.py
+++ b/tempest/tests/compute/base.py
@@ -100,7 +100,7 @@
         operate in an isolated tenant container.
         """
         admin_client = cls._get_identity_admin_client()
-        rand_name_root = cls.__name__
+        rand_name_root = rand_name(cls.__name__)
         if cls.isolated_creds:
             # Main user already created. Create the alt one...
             rand_name_root += '-alt'