diff --git a/src/app/enums/nfs-acl.enum.ts b/src/app/enums/nfs-acl.enum.ts
index 6b74c9d5171..e176767a6ab 100644
--- a/src/app/enums/nfs-acl.enum.ts
+++ b/src/app/enums/nfs-acl.enum.ts
@@ -6,7 +6,7 @@ export enum NfsAclTag {
   Everyone = 'everyone@',
   User = 'USER',
   UserGroup = 'GROUP',
-  Both = 'BOTH',
+  Both = 'BOTH', // middleware returns `ID_TYPE_BOTH` when it is not possible to determine whether an AD entity is a user or a group
 }
 
 export const nfsAclTagLabels = new Map<NfsAclTag, string>([
diff --git a/src/app/pages/sharing/smb/smb-acl/smb-acl.component.ts b/src/app/pages/sharing/smb/smb-acl/smb-acl.component.ts
index 040ae59cbf5..bd0f2b8ceee 100644
--- a/src/app/pages/sharing/smb/smb-acl/smb-acl.component.ts
+++ b/src/app/pages/sharing/smb/smb-acl/smb-acl.component.ts
@@ -121,10 +121,11 @@ export class SmbAclComponent implements OnInit {
     this.form.controls.entries.removeAt(index);
   }
 
-  async onSubmit(): Promise<void> {
+  onSubmit(): void {
     this.isLoading = true;
 
-    of(await this.getAclEntriesFromForm())
+    of(undefined)
+      .pipe(mergeMap(() => this.getAclEntriesFromForm()))
       .pipe(mergeMap((acl) => this.ws.call('sharing.smb.setacl', [{ share_name: this.shareAclName, share_acl: acl }])))
       .pipe(untilDestroyed(this))
       .subscribe({