diff --git a/app/src/views/backup/BackupCreate.vue b/app/src/views/backup/BackupCreate.vue
index 8f9c1f4d..79169af1 100644
--- a/app/src/views/backup/BackupCreate.vue
+++ b/app/src/views/backup/BackupCreate.vue
@@ -158,9 +158,9 @@ export default {
       const data = { 'apps[]': [], 'system[]': [] }
       for (const item of this.selected) {
         if (item in this.system) {
-          data.system = [...data.system, ...this.system[item].value]
+          data['system[]'] = [...data['system[]'], ...this.system[item].value]
         } else {
-          data.apps.push(item)
+          data['apps[]'].push(item)
         }
       }