diff --git a/ripd/rip_interface.c b/ripd/rip_interface.c
index bdd319e..35685a7 100644
--- a/ripd/rip_interface.c
+++ b/ripd/rip_interface.c
@@ -50,7 +50,7 @@
 static int rip_enable_network_lookup2 (struct connected *connected);
 static void rip_enable_apply_all (void);
 
-struct message ri_version_msg[] = 
+const struct message ri_version_msg[] =
 {
   {RI_RIP_VERSION_1,       "1"},
   {RI_RIP_VERSION_2,       "2"},