diff --git a/server/modules/routing/binlogrouter/blr_master.c b/server/modules/routing/binlogrouter/blr_master.c
index ae0d1c352..fb8e367e0 100644
--- a/server/modules/routing/binlogrouter/blr_master.c
+++ b/server/modules/routing/binlogrouter/blr_master.c
@@ -108,6 +108,7 @@ static int blr_get_master_semisync(GWBUF *buf);
 static void blr_terminate_master_replication(ROUTER_INSTANCE *router, uint8_t* ptr, int len);
 void blr_notify_all_slaves(ROUTER_INSTANCE *router);
 extern bool blr_notify_waiting_slave(ROUTER_SLAVE *slave);
+void blr_set_checksum(ROUTER_INSTANCE *inst, GWBUF *buf);
 
 static int keepalive = 1;