diff --git a/etc/ceilometer/ceilometer-config-generator.conf b/etc/ceilometer/ceilometer-config-generator.conf
index 93a285713f..5c15ffc0e8 100644
--- a/etc/ceilometer/ceilometer-config-generator.conf
+++ b/etc/ceilometer/ceilometer-config-generator.conf
@@ -3,6 +3,7 @@ output_file = etc/ceilometer/ceilometer.conf
 wrap_width = 79
 namespace = ceilometer
 namespace = ceilometer-auth
+namespace = oslo.cache
 namespace = oslo.concurrency
 namespace = oslo.log
 namespace = oslo.messaging