diff --git a/IRaCIS.Core.Application/Helper/OSSService.cs b/IRaCIS.Core.Application/Helper/OSSService.cs
index c340d44f5..558b3347d 100644
--- a/IRaCIS.Core.Application/Helper/OSSService.cs
+++ b/IRaCIS.Core.Application/Helper/OSSService.cs
@@ -551,9 +551,9 @@ public class OSSService : IOSSService
                         var args = new GetObjectArgs()
                             .WithBucket(minIOConfig.BucketName)
                             .WithObject(ossRelativePath)
-                            .WithCallbackStream(async stream =>
+                            .WithCallbackStream( stream =>
                             {
-                                await stream.CopyToAsync(pipe.Writer.AsStream());
+                                 stream.CopyTo(pipe.Writer.AsStream());
                             });
 
                         await minioClient.GetObjectAsync(args);