diff --git a/src/Squidex/Controllers/Api/History/HistoryController.cs b/src/Squidex/Controllers/Api/History/HistoryController.cs
index 1950a8dd9..1c6f17cf6 100644
--- a/src/Squidex/Controllers/Api/History/HistoryController.cs
+++ b/src/Squidex/Controllers/Api/History/HistoryController.cs
@@ -8,7 +8,6 @@
 
 using System.Linq;
 using System.Threading.Tasks;
-using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using NSwag.Annotations;
 using Squidex.Controllers.Api.History.Models;