diff --git a/tempest/lib/common/cred_client.py b/tempest/lib/common/cred_client.py
index ea06011..a81f53c 100644
--- a/tempest/lib/common/cred_client.py
+++ b/tempest/lib/common/cred_client.py
@@ -59,7 +59,8 @@
     def _check_role_exists(self, role_name):
         try:
             roles = self._list_roles()
-            role = next(r for r in roles if r['name'] == role_name)
+            lc_role_name = role_name.lower()
+            role = next(r for r in roles if r['name'].lower() == lc_role_name)
         except StopIteration:
             return None
         return role