diff --git a/crons/zzz_evobackup b/crons/zzz_evobackup
index 4b49fc5..9e42bd3 100644
--- a/crons/zzz_evobackup
+++ b/crons/zzz_evobackup
@@ -22,9 +22,9 @@ start=$(date --rfc-3339=seconds)
 tmplog=$(mktemp --tmpdir=/tmp evobackup.XXX)
 
 # rsync command line to backup all data.
-rsync -avz --delete --force --ignore-errors --partial \
+rsync -avz --force --ignore-errors --partial \
     --include-from=/etc/evobackup/conf.d/include.cf \
-    / -e "ssh -p $SSHPORT -4" \
+    --delete --delete-excluded / -e "ssh -p $SSHPORT -4" \
     root@${BACKUPSERVER}:/var/backup/ > $tmplog
 status=$?
 
diff --git a/install/etc/evobackup/conf.d/include.cf b/install/etc/evobackup/conf.d/include.cf
index 200e463..ad54326 100644
--- a/install/etc/evobackup/conf.d/include.cf
+++ b/install/etc/evobackup/conf.d/include.cf
@@ -11,6 +11,7 @@
 - /proc
 - /selinux
 - /run
+- /sys
 - /usr/src
 - /usr/doc
 - /usr/share/doc