diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 02ab7ca..56f3c94 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -9,6 +9,8 @@
 #include <asm/types.h>		/* For __uXX types */
 #include <linux/types.h>	/* For __beXX types in userland */
 
+#include <linux/sysctl.h>	/* For ctl_path */
+
 #define IP_VS_VERSION_CODE	0x010201
 #define NVERSION(version)			\
 	(version >> 16) & 0xFF,			\