diff --git a/backup.sh b/backup.sh
index 7721b8e..6841dc1 100755
--- a/backup.sh
+++ b/backup.sh
@@ -16,7 +16,7 @@
 
 # backup mysql
 dbFile="${backupDir}/db/${currentDate}.sql"
-docker exec $(docker container ls -qf name=nextcloud-database) sh -c 'mysqldump --single-transaction=TRUE --lock-tables --default-character-set=utf8mb4 -uroot -p"${MYSQL_ROOT_PASSWORD}" ${MYSQL_DATABASE}' > ${dbFile}
+docker exec $(docker container ls -qf name=nextcloud_database) sh -c 'mysqldump --single-transaction=TRUE --lock-tables --default-character-set=utf8mb4 -uroot -p"${MYSQL_ROOT_PASSWORD}" ${MYSQL_DATABASE}' > ${dbFile}
 sed -i "/^mysqldump: \\[Warning\\]/d" ${dbFile}
 tar -cj ${dbFile} -f "${dbFile}.tbz2"
 rm ${dbFile}