diff --git a/ospfd/ospf_vty.c b/ospfd/ospf_vty.c
index dd700b0..5f9fa2c 100644
--- a/ospfd/ospf_vty.c
+++ b/ospfd/ospf_vty.c
@@ -4403,7 +4403,7 @@
 
   if (argc == 1)
     {
-      ret = inet_aton(argv[1], &addr);
+      ret = inet_aton(argv[0], &addr);
       if (!ret)
 	{
 	  vty_out (vty, "Please specify interface address by A.B.C.D%s",
@@ -4447,7 +4447,7 @@
 
   if (argc == 1)
     {
-      ret = inet_aton(argv[1], &addr);
+      ret = inet_aton(argv[0], &addr);
       if (!ret)
 	{
 	  vty_out (vty, "Please specify interface address by A.B.C.D%s",
@@ -4551,9 +4551,9 @@
   ifp = vty->index;
   params = IF_DEF_PARAMS (ifp);
 
-  if (argc == 2)
+  if (argc == 1)
     {
-      ret = inet_aton(argv[1], &addr);
+      ret = inet_aton(argv[0], &addr);
       if (!ret)
 	{
 	  vty_out (vty, "Please specify interface address by A.B.C.D%s",