diff --git a/metadata/service/control/single.yml b/metadata/service/control/single.yml
index 8903522..ef579f7 100644
--- a/metadata/service/control/single.yml
+++ b/metadata/service/control/single.yml
@@ -125,7 +125,7 @@
         id: 1
       database:
         engine: cassandra
-        port: 9160      
+        port: 9160
       identity:
         engine: keystone
         version: '2.0'
@@ -137,4 +137,4 @@
         tenant: admin
       network:
         engine: neutron
-        host: ${_param:single_address}
\ No newline at end of file
+        host: ${_param:single_address}