diff --git a/src/WorkFlowCheck.API/Controllers/SyncController.cs b/src/WorkFlowCheck.API/Controllers/SyncController.cs
index b54015a..e54fc19 100644
--- a/src/WorkFlowCheck.API/Controllers/SyncController.cs
+++ b/src/WorkFlowCheck.API/Controllers/SyncController.cs
@@ -479,7 +479,9 @@ namespace WorkFlowCheck.API.Controllers
 
                 var fileBytes = await System.IO.File.ReadAllBytesAsync(filePath);
                 var fileType = "application/octet-stream";
-
+                
+                Response.Headers.Add("Content-Length", fileBytes.Length.ToString());
+                
                 return File(fileBytes, fileType, fileName);
             }
             catch (Exception ex)