diff --git a/config-generator.conf b/config-generator.conf
index 115880d018..c1da19ae46 100644
--- a/config-generator.conf
+++ b/config-generator.conf
@@ -16,7 +16,6 @@ namespace = keystonemiddleware.auth_token
 namespace = oslo.cache
 namespace = oslo.messaging
 namespace = oslo.middleware
-namespace = oslo.cache
 namespace = oslo.log
 namespace = oslo.policy
 namespace = oslo.reports