diff --git a/etc/aodh/aodh-config-generator.conf b/etc/aodh/aodh-config-generator.conf
index 576b45dd4..5b32e7216 100644
--- a/etc/aodh/aodh-config-generator.conf
+++ b/etc/aodh/aodh-config-generator.conf
@@ -7,5 +7,6 @@ namespace = oslo.db
 namespace = oslo.log
 namespace = oslo.messaging
 namespace = oslo.middleware.cors
+namespace = oslo.middleware.http_proxy_to_wsgi
 namespace = oslo.policy
 namespace = keystonemiddleware.auth_token