diff --git a/bgpd/bgp_vty.c b/bgpd/bgp_vty.c
index 101f676..9cb3018 100644
--- a/bgpd/bgp_vty.c
+++ b/bgpd/bgp_vty.c
@@ -4177,18 +4177,10 @@
   if (sort == clear_as)
     {
       as_t as;
-      unsigned long as_ul;
       int find = 0;
 
-      VTY_GET_LONG ("AS", as_ul, arg);
+      VTY_GET_INTEGER_RANGE ("AS", as, arg, 1, BGP_AS4_MAX);
       
-      if (!as_ul)
-	{
-	  vty_out (vty, "Invalid AS number%s", VTY_NEWLINE); 
-	  return CMD_WARNING;
-	}
-      as = (as_t) as_ul;
-
       for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer))
 	{
 	  if (peer->as != as)