diff --git a/ospf6d/ospf6_flood.c b/ospf6d/ospf6_flood.c
index dc9ecbf..49ed6e2 100644
--- a/ospf6d/ospf6_flood.c
+++ b/ospf6d/ospf6_flood.c
@@ -220,6 +220,7 @@
   if (old)
     {
       THREAD_OFF (old->expire);
+      THREAD_OFF (old->refresh);
       ospf6_flood_clear (old);
     }