diff --git a/tempest/common/waiters.py b/tempest/common/waiters.py
index 865db39..b7b02ab 100644
--- a/tempest/common/waiters.py
+++ b/tempest/common/waiters.py
@@ -218,7 +218,7 @@
                        'within the required time (%s s).' %
                        (volume_id, new_volume_type, current_volume_type,
                         client.build_timeout))
-            raise exceptions.TimeoutException(message)
+            raise lib_exc.TimeoutException(message)
 
 
 def wait_for_snapshot_status(client, snapshot_id, status):