diff --git a/apps/mariadb-shared-cluster/templates/backup.yml b/apps/mariadb-shared-cluster/templates/backup.yml
index e9578619a..d62425e92 100644
--- a/apps/mariadb-shared-cluster/templates/backup.yml
+++ b/apps/mariadb-shared-cluster/templates/backup.yml
@@ -11,7 +11,7 @@ spec:
   maxRetentionDays: 30
   storage:
     persistentVolumeClaim:
-        storageClassName: {{ .Values.persistence.backup.storageClassName }}
+      storageClassName: {{ .Values.persistence.backup.storageClassName }}
       resources:
         requests:
           storage: {{ .Values.persistence.backup.requestSize }}