diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index 83d3398559ea80d3823140856b375dd5c2419927..7db1de0497c63bbde324cc354423dc11a06ef636 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -11,6 +11,7 @@
 #include <linux/socket.h>
 #include <linux/netdevice.h>
 #include <linux/init.h>
+#include <net/ip.h>
 #include <net/sock.h>
 
 static struct ctl_table net_core_table[] = {