diff --git a/net/ipv4/ipvs/ip_vs_proto_udp.c b/net/ipv4/ipvs/ip_vs_proto_udp.c
index 8ae5f2e..89d9175 100644
--- a/net/ipv4/ipvs/ip_vs_proto_udp.c
+++ b/net/ipv4/ipvs/ip_vs_proto_udp.c
@@ -15,8 +15,11 @@
  *
  */
 
+#include <linux/in.h>
+#include <linux/ip.h>
 #include <linux/kernel.h>
 #include <linux/netfilter_ipv4.h>
+#include <linux/udp.h>
 
 #include <net/ip_vs.h>