diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
index e2eea60bf875..62f2d3f1e431 100644
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -1137,7 +1137,7 @@ static int pppol2tp_ioctl(struct socket *sock, unsigned int cmd,
 		break;
 
 	default:
-		return -ENOSYS;
+		return -ENOIOCTLCMD;
 	}
 
 	return 0;