diff --git a/ospfd/ospf_dump.c b/ospfd/ospf_dump.c
index e65b2e3..8ace095 100644
--- a/ospfd/ospf_dump.c
+++ b/ospfd/ospf_dump.c
@@ -661,7 +661,7 @@
   zlog_debug ("Header");
   zlog_debug ("  Version %d", ospfh->version);
   zlog_debug ("  Type %d (%s)", ospfh->type,
-	     ospf_packet_type_str[ospfh->type]);
+	     LOOKUP (ospf_packet_type_str, ospfh->type));
   zlog_debug ("  Packet Len %d", ntohs (ospfh->length));
   zlog_debug ("  Router ID %s", inet_ntoa (ospfh->router_id));
   zlog_debug ("  Area ID %s", inet_ntoa (ospfh->area_id));
@@ -1457,7 +1457,7 @@
     if (IS_DEBUG_OSPF_PACKET (i, SEND) && IS_DEBUG_OSPF_PACKET (i, RECV))
       {
 	vty_out (vty, "  OSPF packet %s%s debugging is on%s",
-		 ospf_packet_type_str[i + 1],
+		 LOOKUP (ospf_packet_type_str, i + 1),
 		 IS_DEBUG_OSPF_PACKET (i, DETAIL) ? " detail" : "",
 		 VTY_NEWLINE);
       }
@@ -1465,12 +1465,12 @@
       {
 	if (IS_DEBUG_OSPF_PACKET (i, SEND))
 	  vty_out (vty, "  OSPF packet %s send%s debugging is on%s",
-		   ospf_packet_type_str[i + 1],
+		   LOOKUP (ospf_packet_type_str, i + 1),
 		   IS_DEBUG_OSPF_PACKET (i, DETAIL) ? " detail" : "",
 		   VTY_NEWLINE);
 	if (IS_DEBUG_OSPF_PACKET (i, RECV))
 	  vty_out (vty, "  OSPF packet %s receive%s debugging is on%s",
-		   ospf_packet_type_str[i + 1],
+		   LOOKUP (ospf_packet_type_str, i + 1),
 		   IS_DEBUG_OSPF_PACKET (i, DETAIL) ? " detail" : "",
 		   VTY_NEWLINE);
       }
diff --git a/ospfd/ospf_dump.h b/ospfd/ospf_dump.h
index fb81371..455214f 100644
--- a/ospfd/ospf_dump.h
+++ b/ospfd/ospf_dump.h
@@ -121,7 +121,6 @@
 extern unsigned long term_debug_ospf_nssa;
 
 /* Message Strings. */
-extern const char *ospf_packet_type_str[];
 extern char *ospf_lsa_type_str[];
 
 /* Prototypes. */
diff --git a/ospfd/ospf_packet.c b/ospfd/ospf_packet.c
index b714c27..a8102da 100644
--- a/ospfd/ospf_packet.c
+++ b/ospfd/ospf_packet.c
@@ -50,15 +50,16 @@
 #include "ospfd/ospf_dump.h"
 
 /* Packet Type String. */
-const char *ospf_packet_type_str[] =
+const struct message ospf_packet_type_str[] =
 {
-  "unknown",
-  "Hello",
-  "Database Description",
-  "Link State Request",
-  "Link State Update",
-  "Link State Acknowledgment",
+  { OSPF_MSG_HELLO,   "Hello"                     },
+  { OSPF_MSG_DB_DESC, "Database Description"      },
+  { OSPF_MSG_LS_REQ,  "Link State Request"        },
+  { OSPF_MSG_LS_UPD,  "Link State Update"         },
+  { OSPF_MSG_LS_ACK,  "Link State Acknowledgment" },
 };
+const size_t ospf_packet_type_str_max = sizeof (ospf_packet_type_str) /
+  sizeof (ospf_packet_type_str[0]);
 
 /* OSPF authentication checking function */
 static int
@@ -201,7 +202,7 @@
 	       "destination %s) called with NULL obuf, ignoring "
 	       "(please report this bug)!\n",
 	       IF_NAME(oi), oi->state, LOOKUP (ospf_ism_state_msg, oi->state),
-	       ospf_packet_type_str[stream_getc_from(op->s, 1)],
+	       LOOKUP (ospf_packet_type_str, stream_getc_from(op->s, 1)),
 	       inet_ntoa (op->dst));
       return;
     }
@@ -755,7 +756,7 @@
 	}
 
       zlog_debug ("%s sent to [%s] via [%s].",
-		 ospf_packet_type_str[type], inet_ntoa (op->dst),
+		 LOOKUP (ospf_packet_type_str, type), inet_ntoa (op->dst),
 		 IF_NAME (oi));
 
       if (IS_DEBUG_OSPF_PACKET (type - 1, DETAIL))
@@ -801,7 +802,7 @@
         {
           zlog_debug ("ospf_header[%s/%s]: selforiginated, "
                      "dropping.",
-                     ospf_packet_type_str[ospfh->type],
+                     LOOKUP (ospf_packet_type_str, ospfh->type),
                      inet_ntoa (iph->ip_src));
         }
       return;
@@ -2576,7 +2577,7 @@
         }
 
       zlog_debug ("%s received from [%s] via [%s]",
-                 ospf_packet_type_str[ospfh->type],
+                 LOOKUP (ospf_packet_type_str, ospfh->type),
                  inet_ntoa (ospfh->router_id), IF_NAME (oi));
       zlog_debug (" src [%s],", inet_ntoa (iph->ip_src));
       zlog_debug (" dst [%s]", inet_ntoa (iph->ip_dst));
diff --git a/ospfd/ospf_packet.h b/ospfd/ospf_packet.h
index 9a47208..2115f11 100644
--- a/ospfd/ospf_packet.h
+++ b/ospfd/ospf_packet.h
@@ -163,4 +163,7 @@
 extern int ospf_poll_timer (struct thread *);
 extern int ospf_hello_reply_timer (struct thread *);
 
+extern const struct message ospf_packet_type_str[];
+extern const size_t ospf_packet_type_str_max;
+
 #endif /* _ZEBRA_OSPF_PACKET_H */