diff --git a/internal/piwigo/file_to_upload.go b/internal/piwigo/file_to_upload.go
index 323137c..baebc4c 100644
--- a/internal/piwigo/file_to_upload.go
+++ b/internal/piwigo/file_to_upload.go
@@ -25,6 +25,10 @@ func (f *FileToUpload) FullPath() string {
 	return filepath.Join(f.Dir, f.Name)
 }
 
+func (f *FileToUpload) Checked() bool {
+	return f.md5 != nil
+}
+
 func (f *FileToUpload) MD5() string {
 	if f.md5 == nil {
 		md5, err := Md5File(f.FullPath())
diff --git a/internal/piwigo/files.go b/internal/piwigo/files.go
index b1a3515..9a8fae8 100644
--- a/internal/piwigo/files.go
+++ b/internal/piwigo/files.go
@@ -25,13 +25,14 @@ func (p *Piwigo) FileExists(md5 string) bool {
 }
 
 func (p *Piwigo) Upload(file *FileToUpload, stat *FileToUploadStat, nbJobs int, hasVideoJS bool) error {
-	if file.MD5() == "" {
-		stat.Fail()
-		return errors.New("checksum error")
+	if !file.Checked() {
+		if file.MD5() == "" {
+			stat.Fail()
+			return errors.New("checksum error")
+		}
+		stat.Check()
 	}
 
-	stat.Check()
-
 	if p.FileExists(file.MD5()) {
 		stat.Skip()
 		return errors.New("file already exists")