diff --git a/ospf6d/ospf6_spf.h b/ospf6d/ospf6_spf.h
index 64f5ed8..6a6424e 100644
--- a/ospf6d/ospf6_spf.h
+++ b/ospf6d/ospf6_spf.h
@@ -68,7 +68,7 @@
 
   /* For tree display */
   struct ospf6_vertex *parent;
-  list child_list;
+  struct list *child_list;
 };
 
 #define OSPF6_VERTEX_TYPE_ROUTER  0x01