diff --git a/net/mctp/af_mctp.c b/net/mctp/af_mctp.c
index 0f49b41570f5..8f241c92e03d 100644
--- a/net/mctp/af_mctp.c
+++ b/net/mctp/af_mctp.c
@@ -346,7 +346,7 @@ static int mctp_getsockopt(struct socket *sock, int level, int optname,
 		return 0;
 	}
 
-	return -EINVAL;
+	return -ENOPROTOOPT;
 }
 
 static int mctp_ioctl_alloctag(struct mctp_sock *msk, unsigned long arg)