diff --git a/install/centos/README.md b/install/centos/README.md
index 4d1fa0f..3007924 100644
--- a/install/centos/README.md
+++ b/install/centos/README.md
@@ -154,7 +154,7 @@ Make sure redis is started on boot:
 
 
     sudo chkconfig redis on
-    service redis start
+    sudo service redis start
 
 ### Configure sendmail