diff --git a/files/debian/debian-essentials.sh b/files/debian/debian-essentials.sh
index 6aaeaeb..a9c51d6 100755
--- a/files/debian/debian-essentials.sh
+++ b/files/debian/debian-essentials.sh
@@ -41,7 +41,7 @@ if [[ ! -f /etc/apt/sources.list.bak ]] ; then
 fi
 
 # remove other sources.list backup
-rm /etc/apt/sources.list.11.backup
+rm /etc/apt/sources.list.11.backup > /dev/null 2>&1
 
 # update and upgrade
 apt-get update