diff --git a/include/linux/netfilter_ipv4/ip_nat.h b/include/linux/netfilter_ipv4/ip_nat.h
index 41a107de17cf547510a4923b58595df400a45472..e9f5ed1d9f680f4b32de4c01d26ed50089ec9983 100644
--- a/include/linux/netfilter_ipv4/ip_nat.h
+++ b/include/linux/netfilter_ipv4/ip_nat.h
@@ -23,7 +23,7 @@ struct ip_nat_seq {
 	 * modification (if any) */
 	u_int32_t correction_pos;
 	/* sequence number offset before and after last modification */
-	int32_t offset_before, offset_after;
+	int16_t offset_before, offset_after;
 };
 
 /* Single range specification. */