diff --git a/files/.local/bin/mkbackup b/files/.local/bin/mkbackup
index bbc3765..fcd9d5f 100755
--- a/files/.local/bin/mkbackup
+++ b/files/.local/bin/mkbackup
@@ -6,4 +6,5 @@ if ! test "$(id -u)" = 0; then
 	exit 1
 fi
 
-borg create -e '*/.git/*' -e "$HOME/nfs" --verbose "backups@kentoj.de:$(hostname)::$(date -I)_$1" /etc /home /srv /var/ /usr
+export BORG_RSH="ssh -i '$HOME/.ssh/id_ed25519'"
+borg create -e '*/.git/*' -e "$HOME/nfs" --verbose "backups@kentoj.de:$(hostname)::$(date -I)_$1" /etc /home /srv /var /usr