diff --git a/lib/keystone b/lib/keystone
index c9433d9..89e9aa1 100644
--- a/lib/keystone
+++ b/lib/keystone
@@ -226,7 +226,7 @@
         iniset $KEYSTONE_CONF assignment driver "keystone.assignment.backends.$KEYSTONE_ASSIGNMENT_BACKEND.Assignment"
     fi
 
-    iniset_rpc_backend keystone $KEYSTONE_CONF DEFAULT
+    iniset_rpc_backend keystone $KEYSTONE_CONF
 
     # Set the URL advertised in the ``versions`` structure returned by the '/' route
     if is_service_enabled tls-proxy; then