diff --git a/lib/bfd.c b/lib/bfd.c
index cad0916d7d..9800ed4924 100644
--- a/lib/bfd.c
+++ b/lib/bfd.c
@@ -552,7 +552,8 @@ static bool bfd_sess_address_changed(const struct bfd_session_params *bsp,
 }
 
 void bfd_sess_set_ipv4_addrs(struct bfd_session_params *bsp,
-			     struct in_addr *src, struct in_addr *dst)
+			     const struct in_addr *src,
+			     const struct in_addr *dst)
 {
 	if (!bfd_sess_address_changed(bsp, AF_INET, (struct in6_addr *)src,
 				      (struct in6_addr *)dst))
@@ -576,7 +577,8 @@ void bfd_sess_set_ipv4_addrs(struct bfd_session_params *bsp,
 }
 
 void bfd_sess_set_ipv6_addrs(struct bfd_session_params *bsp,
-			     struct in6_addr *src, struct in6_addr *dst)
+			     const struct in6_addr *src,
+			     const struct in6_addr *dst)
 {
 	if (!bfd_sess_address_changed(bsp, AF_INET6, src, dst))
 		return;
diff --git a/lib/bfd.h b/lib/bfd.h
index 6c0d1c177e..cc9659ff79 100644
--- a/lib/bfd.h
+++ b/lib/bfd.h
@@ -124,7 +124,8 @@ void bfd_sess_free(struct bfd_session_params **bsp);
  * \param dst remote address (mandatory).
  */
 void bfd_sess_set_ipv4_addrs(struct bfd_session_params *bsp,
-			     struct in_addr *src, struct in_addr *dst);
+			     const struct in_addr *src,
+			     const struct in_addr *dst);
 
 /**
  * Set the local and peer address of the BFD session.
@@ -138,7 +139,8 @@ void bfd_sess_set_ipv4_addrs(struct bfd_session_params *bsp,
  * \param dst remote address (mandatory).
  */
 void bfd_sess_set_ipv6_addrs(struct bfd_session_params *bsp,
-			     struct in6_addr *src, struct in6_addr *dst);
+			     const struct in6_addr *src,
+			     const struct in6_addr *dst);
 
 /**
  * Configure the BFD session interface.