diff --git a/files/debian/debian-essentials.sh b/files/debian/debian-essentials.sh
index c212d12..6c9783c 100755
--- a/files/debian/debian-essentials.sh
+++ b/files/debian/debian-essentials.sh
@@ -38,6 +38,7 @@ 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
 
 # update and upgrade