diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index cd9e7c0..98338ed2 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -313,6 +313,7 @@
 	NET_NF_CONNTRACK_FRAG6_TIMEOUT=29,
 	NET_NF_CONNTRACK_FRAG6_LOW_THRESH=30,
 	NET_NF_CONNTRACK_FRAG6_HIGH_THRESH=31,
+	NET_NF_CONNTRACK_CHECKSUM=32,
 };
 
 /* /proc/sys/net/ipv4 */
@@ -492,6 +493,7 @@
  	NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
  	NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
 	NET_IPV4_NF_CONNTRACK_COUNT=27,
+	NET_IPV4_NF_CONNTRACK_CHECKSUM=28,
 };
  
 /* /proc/sys/net/ipv6 */