diff --git a/distribusi.go b/distribusi.go
index d381ba2..0e0ead2 100644
--- a/distribusi.go
+++ b/distribusi.go
@@ -471,6 +471,8 @@ func genThumb(c *cli.Context, fpath, caption string) (string, error) {
 
 	imgBase64Str := base64.StdEncoding.EncodeToString(buf.Bytes())
 
+	logrus.Debugf("successfully generated thumbnail for %s", fpath)
+
 	return imgBase64Str, nil
 }