diff --git a/pkg/services/oss_service.go b/pkg/services/oss_service.go
index 0298244..51350a9 100755
--- a/pkg/services/oss_service.go
+++ b/pkg/services/oss_service.go
@@ -207,9 +207,7 @@ func (s *s3OSS) PublicURL(objectKey string) string {
 func (s *s3OSS) UploadFile(objectKey, filePath string) error {
 	ctx := context.Background()
 	_, err := s.client.FPutObject(ctx, s.bucketName, objectKey, filePath, minio.PutObjectOptions{
-		UserMetadata: map[string]string{
-			"Content-Disposition": "attachment",
-		},
+		ContentDisposition: "attachment",
 	})
 	if err != nil {
 		return fmt.Errorf("error subiendo archivo a S3: %w", err)
@@ -285,9 +283,7 @@ func (s *s3OSS) SignedURL(objectKey string, expireSeconds int) (string, error) {
 func (s *s3OSS) UploadFromReader(objectKey, contentType string, r io.Reader) error {
 	ctx := context.Background()
 	opts := minio.PutObjectOptions{
-		UserMetadata: map[string]string{
-			"Content-Disposition": "attachment",
-		},
+		ContentDisposition: "attachment",
 	}
 	if contentType != "" {
 		opts.ContentType = contentType