diff --git a/src/net_packet.c b/src/net_packet.c
index ab9c06ca..2a5ae86f 100644
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -1063,7 +1063,7 @@ static length_t choose_initial_maxmtu(node_t *n) {
 	return mtu;
 
 #else
-
+	UNUSED(n);
 	return MTU;
 
 #endif