diff --git a/nova/api/openstack/placement/microversion.py b/nova/api/openstack/placement/microversion.py
index 2b786fce67f2..72c85782289b 100644
--- a/nova/api/openstack/placement/microversion.py
+++ b/nova/api/openstack/placement/microversion.py
@@ -36,7 +36,7 @@ VERSIONED_METHODS = collections.defaultdict(list)
 VERSIONS = [
     '1.0',
     '1.1',  # initial support for aggregate.get_aggregates and set_aggregates
-    '1.2',  # Adds /resource-classes resource endpoint
+    '1.2',  # Adds /resource_classes resource endpoint
 ]