diff --git a/nova/api/validation/__init__.py b/nova/api/validation/__init__.py
index 6f9f26a205..b9cb7067f6 100644
--- a/nova/api/validation/__init__.py
+++ b/nova/api/validation/__init__.py
@@ -194,7 +194,7 @@ def response_body_schema(
                     kwargs
                 )
             except exception.ValidationError:
-                if CONF.api.response_validation == 'warning':
+                if CONF.api.response_validation == 'warn':
                     LOG.exception('Schema failed to validate')
                 else:
                     raise