diff --git a/ospfd/ospf_nsm.c b/ospfd/ospf_nsm.c
index cbc3171..436896c 100644
--- a/ospfd/ospf_nsm.c
+++ b/ospfd/ospf_nsm.c
@@ -643,7 +643,7 @@
 #endif
 }
 
-void
+static void
 nsm_change_state (struct ospf_neighbor *nbr, int state)
 {
   struct ospf_interface *oi = nbr->oi;
diff --git a/ospfd/ospf_nsm.h b/ospfd/ospf_nsm.h
index 4f2ae80..9b7e14a 100644
--- a/ospfd/ospf_nsm.h
+++ b/ospfd/ospf_nsm.h
@@ -81,7 +81,6 @@
 
 /* Prototypes. */
 extern int ospf_nsm_event (struct thread *);
-extern void nsm_change_state (struct ospf_neighbor *, int);
 extern void ospf_check_nbr_loading (struct ospf_neighbor *);
 extern int ospf_db_summary_isempty (struct ospf_neighbor *);
 extern int ospf_db_summary_count (struct ospf_neighbor *);