diff --git a/include/net/secure_seq.h b/include/net/secure_seq.h
index d97f689..c2e542b 100644
--- a/include/net/secure_seq.h
+++ b/include/net/secure_seq.h
@@ -10,7 +10,7 @@
 				      __be16 dport);
 extern __u32 secure_tcp_sequence_number(__be32 saddr, __be32 daddr,
 					__be16 sport, __be16 dport);
-extern __u32 secure_tcpv6_sequence_number(__be32 *saddr, __be32 *daddr,
+extern __u32 secure_tcpv6_sequence_number(const __be32 *saddr, const __be32 *daddr,
 					  __be16 sport, __be16 dport);
 extern u64 secure_dccp_sequence_number(__be32 saddr, __be32 daddr,
 				       __be16 sport, __be16 dport);