diff --git a/files/debian/debian-essentials.sh b/files/debian/debian-essentials.sh
index 6c9783c..6aaeaeb 100755
--- a/files/debian/debian-essentials.sh
+++ b/files/debian/debian-essentials.sh
@@ -38,9 +38,11 @@ fi
 # backup sources.list
 if [[ ! -f /etc/apt/sources.list.bak ]] ; then
     mv /etc/apt/sources.list /etc/apt/sources.list.bak
-    rm /etc/apt/sources.list.11.backup
 fi
 
+# remove other sources.list backup
+rm /etc/apt/sources.list.11.backup
+
 # update and upgrade
 apt-get update
 apt-get upgrade -y