diff --git a/ui/src/views/AutogenView.vue b/ui/src/views/AutogenView.vue
index 5baf0646120..35c65ca46af 100644
--- a/ui/src/views/AutogenView.vue
+++ b/ui/src/views/AutogenView.vue
@@ -1025,7 +1025,7 @@ export default {
 
       this.showAction = true
       for (const param of this.currentAction.paramFields) {
-        if (param.type === 'list' && ['tags', 'hosttags', 'storagetags'].includes(param.name)) {
+        if (param.type === 'list' && ['tags', 'hosttags', 'storagetags', 'files'].includes(param.name)) {
           param.type = 'string'
         }
         if (param.type === 'uuid' || param.type === 'list' || param.name === 'account' || (this.currentAction.mapping && param.name in this.currentAction.mapping)) {