diff --git a/setup.cfg b/setup.cfg
index 67aa93e9b..70746e54d 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -38,7 +38,7 @@ oslo.config.opts =
     mistral.config = mistral.config:list_opts
 
 oslo.config.opts.defaults =
-    oslo.middleware.cors = mistral.config:set_cors_middleware_defaults
+    mistral.config = mistral.config:set_cors_middleware_defaults
 
 tempest.test_plugins =
     mistral_test = mistral_tempest_tests.plugin:MistralTempestPlugin