diff --git a/include/linux/netfilter/ipset/ip_set.h b/include/linux/netfilter/ipset/ip_set.h
index f900f33a5f3dc78ffd616303d3fddaf80e7e688b..69aa60487f0581e00634dcff10ba4ca519609eba 100644
--- a/include/linux/netfilter/ipset/ip_set.h
+++ b/include/linux/netfilter/ipset/ip_set.h
@@ -67,7 +67,7 @@ enum ip_set_offset {
 #define SET_WITH_COUNTER(s)	((s)->extensions & IPSET_EXT_COUNTER)
 
 struct ip_set_ext {
-	unsigned long timeout;
+	u32 timeout;
 	u64 packets;
 	u64 bytes;
 };