diff --git a/vlib/net/smtp/smtp.v b/vlib/net/smtp/smtp.v
index 87ed6b288e4679..30fa64e84f802f 100644
--- a/vlib/net/smtp/smtp.v
+++ b/vlib/net/smtp/smtp.v
@@ -61,9 +61,10 @@ pub:
 }
 
 pub struct Attachment {
+pub:
+	cid      string
 	filename string
 	bytes    []u8
-	cid      string
 }
 
 // new_client returns a new SMTP client and connects to it