diff --git a/include/net/udp_tunnel.h b/include/net/udp_tunnel.h
index d9c6d04bb3b5..fc1fc43345b5 100644
--- a/include/net/udp_tunnel.h
+++ b/include/net/udp_tunnel.h
@@ -52,7 +52,7 @@ int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg,
 static inline int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg,
 				   struct socket **sockp)
 {
-	return 0;
+	return -EPFNOSUPPORT;
 }
 #endif