diff --git a/ripd/rip_offset.c b/ripd/rip_offset.c
index 61f1376..e7d71f6 100644
--- a/ripd/rip_offset.c
+++ b/ripd/rip_offset.c
@@ -28,6 +28,8 @@
 #include "linklist.h"
 #include "memory.h"
 
+#include "ripd/ripd.h"
+
 #define RIP_OFFSET_LIST_IN  0
 #define RIP_OFFSET_LIST_OUT 1
 #define RIP_OFFSET_LIST_MAX 2
@@ -46,7 +48,7 @@
 
 static struct list *rip_offset_list_master;
 
-int
+static int
 strcmp_safe (const char *s1, const char *s2)
 {
   if (s1 == NULL && s2 == NULL)
@@ -58,8 +60,8 @@
   return strcmp (s1, s2);
 }
 
-struct rip_offset_list *
-rip_offset_list_new ()
+static struct rip_offset_list *
+rip_offset_list_new (void)
 {
   struct rip_offset_list *new;
 
@@ -68,13 +70,13 @@
   return new;
 }
 
-void
+static void
 rip_offset_list_free (struct rip_offset_list *offset)
 {
   XFREE (MTYPE_RIP_OFFSET_LIST, offset);
 }
 
-struct rip_offset_list *
+static struct rip_offset_list *
 rip_offset_list_lookup (const char *ifname)
 {
   struct rip_offset_list *offset;
@@ -88,7 +90,7 @@
   return NULL;
 }
 
-struct rip_offset_list *
+static struct rip_offset_list *
 rip_offset_list_get (const char *ifname)
 {
   struct rip_offset_list *offset;
@@ -105,7 +107,7 @@
   return offset;
 }
 
-int
+static int
 rip_offset_list_set (struct vty *vty, const char *alist, const char *direct_str,
 		     const char *metric_str, const char *ifname)
 {
@@ -143,7 +145,7 @@
   return CMD_SUCCESS;
 }
 
-int
+static int
 rip_offset_list_unset (struct vty *vty, const char *alist,
 		       const char *direct_str, const char *metric_str,
 		       const char *ifname)
@@ -334,13 +336,13 @@
   return rip_offset_list_unset (vty, argv[0], argv[1], argv[2], argv[3]);
 }
 
-int
+static int
 offset_list_cmp (struct rip_offset_list *o1, struct rip_offset_list *o2)
 {
   return strcmp_safe (o1->ifname, o2->ifname);
 }
 
-void
+static void
 offset_list_del (struct rip_offset_list *offset)
 {
   if (OFFSET_LIST_IN_NAME (offset))