diff --git a/bgpd/bgp_debug.c b/bgpd/bgp_debug.c
index 9c5208d..3196eff 100644
--- a/bgpd/bgp_debug.c
+++ b/bgpd/bgp_debug.c
@@ -66,7 +66,7 @@
 int bgp_status_msg_max = BGP_STATUS_MAX;
 
 /* BGP message type string. */
-char *bgp_type_str[] =
+const char *bgp_type_str[] =
 {
   NULL,
   "OPEN",
@@ -154,8 +154,8 @@
 int bgp_notify_capability_msg_max = BGP_NOTIFY_CAPABILITY_MAX;
 
 /* Origin strings. */
-char *bgp_origin_str[] = {"i","e","?"};
-char *bgp_origin_long_str[] = {"IGP","EGP","incomplete"};
+const char *bgp_origin_str[] = {"i","e","?"};
+const char *bgp_origin_long_str[] = {"IGP","EGP","incomplete"};
 
 /* Dump attribute. */
 int
@@ -233,9 +233,10 @@
 
 /* dump notify packet */
 void
-bgp_notify_print(struct peer *peer, struct bgp_notify *bgp_notify, char *direct)
+bgp_notify_print(struct peer *peer, struct bgp_notify *bgp_notify, 
+                 const char *direct)
 {
-  char *subcode_str;
+  const char *subcode_str;
 
   subcode_str = "";