diff --git a/crond/backup b/crond/backup
index 042a7bb395b029db4c5c21cc94b995267f22b8e8..b6e3034b2bccb45ceb0fa67c272ad6fab5751ac6 100755
--- a/crond/backup
+++ b/crond/backup
@@ -11,7 +11,7 @@ set -eu
 # which should be a Docker volume.
 
 alias nc_run='docker exec -u www-data nextcloud-nextcloud-1'
-alias db_run='docker exec -u nobody nextcloud_mysql_1'
+alias db_run='docker exec -u nobody nextcloud-mysql-1'
 
 cleanup () {
     nc_run php occ maintenance:mode --off