diff --git a/unit-files/backup@.service b/unit-files/backup@.service
index b474905defa03b2c77a3bfcd138a4b971eb0cdba..b0590e86ca185243d93f5ad2eb09887a8dbb7ee0 100644
--- a/unit-files/backup@.service
+++ b/unit-files/backup@.service
@@ -14,7 +14,7 @@ ExecStartPre=/bin/bash -euxc ' \
         mysqldump \
           --all-databases \
           --events \
-          -u admin \
+          -uadmin \
           -p$mysql_passwd \
           -h db > /data/domains/%i/mysql/dump.sql; \
   fi'