diff --git a/src/Sonarr.Api.V3/System/Backup/BackupController.cs b/src/Sonarr.Api.V3/System/Backup/BackupController.cs
index e811e0bf4..bb2554c03 100644
--- a/src/Sonarr.Api.V3/System/Backup/BackupController.cs
+++ b/src/Sonarr.Api.V3/System/Backup/BackupController.cs
@@ -90,6 +90,7 @@ namespace Sonarr.Api.V3.System.Backup
         }
 
         [HttpPost("restore/upload")]
+        [RequestFormLimits(MultipartBodyLengthLimit = 500000000)]
         public object UploadAndRestore()
         {
             var files = Request.Form.Files;