diff --git a/pfsense-backup.sh b/pfsense-backup.sh
index 2f8a061..95e720a 100755
--- a/pfsense-backup.sh
+++ b/pfsense-backup.sh
@@ -66,7 +66,10 @@ if [ $cron -eq 1 ]; then
   else
     do_backup
     if [ ! -z $keepfiles ]; then
-     ls -d -1tr $destination/*.xml | head -n -$keepfiles | xargs -d '\n' rm -f
+     remove=$(ls -d -1tr $destination/*.xml | tail -n +$keepfiles | head -n1)
+     if [ ! -z $remove ]; then
+      rm -f $(ls -d -1tr $destination/*.xml | tail -n -$keepfiles | head -n1)
+     fi
     fi
   fi
 else