diff --git a/ospfd/ospf_lsa.h b/ospfd/ospf_lsa.h
index c71877d..dd3b91a 100644
--- a/ospfd/ospf_lsa.h
+++ b/ospfd/ospf_lsa.h
@@ -237,6 +237,7 @@
 extern int tv_ceil (struct timeval);
 extern int tv_floor (struct timeval);
 extern struct timeval int2tv (int);
+extern struct timeval msec2tv (int);
 extern struct timeval tv_add (struct timeval, struct timeval);
 extern struct timeval tv_sub (struct timeval, struct timeval);
 extern int tv_cmp (struct timeval, struct timeval);