diff --git a/rc.subr b/rc.subr
index 00ce1ad..5e71582 100755
--- a/rc.subr
+++ b/rc.subr
@@ -659,6 +659,7 @@ add_tayga_map()
 
 _rc_router_epilogue()
 {
+	max_fib=$(( ${fib_count} - 1 ))
 	rtsold_flags="${rtsold_flags} ${ipv6_isp_interfaces}"
 }