diff --git a/smtp.go b/smtp.go
index d799886..906ce14 100644
--- a/smtp.go
+++ b/smtp.go
@@ -227,7 +227,7 @@ func (c *smtpClient) rcpt(to string) error {
 	if err := validateLine(to); err != nil {
 		return err
 	}
-	_, _, err := c.cmd(250, "RCPT TO:<%s>", to)
+	_, _, err := c.cmd(25, "RCPT TO:<%s>", to)
 	return err
 }