diff --git a/net/mctp/af_mctp.c b/net/mctp/af_mctp.c
index 9d5db3feedec..4dee06171361 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;
 }
 
 /* helpers for reading/writing the tag ioc, handling compatibility across the