diff --git a/extensions/ipset/ip_set_iptree.c b/extensions/ipset/ip_set_iptree.c
index ba0bf24..362ebd6 100644
--- a/extensions/ipset/ip_set_iptree.c
+++ b/extensions/ipset/ip_set_iptree.c
@@ -10,6 +10,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/ip.h>
+#include <linux/jiffies.h>
 #include <linux/skbuff.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
diff --git a/extensions/ipset/ip_set_iptreemap.c b/extensions/ipset/ip_set_iptreemap.c
index 00f3357..fd558ef 100644
--- a/extensions/ipset/ip_set_iptreemap.c
+++ b/extensions/ipset/ip_set_iptreemap.c
@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/ip.h>
+#include <linux/jiffies.h>
 #include <linux/skbuff.h>
 #include <linux/slab.h>
 #include <linux/delay.h>