diff --git a/tempest/common/dynamic_creds.py b/tempest/common/dynamic_creds.py
index a63af38..e5d65f5 100644
--- a/tempest/common/dynamic_creds.py
+++ b/tempest/common/dynamic_creds.py
@@ -134,6 +134,9 @@
             self.creds_client.assign_user_role(user, project,
                                                self.admin_role)
             role_assigned = True
+            if self.identity_version == 'v3':
+                self.creds_client.assign_user_role_on_domain(
+                    user, CONF.identity.admin_role)
         # Add roles specified in config file
         for conf_role in CONF.auth.tempest_roles:
             self.creds_client.assign_user_role(user, project, conf_role)