diff --git a/zebra/zebra_rib.c b/zebra/zebra_rib.c
index c88264b..90db932 100644
--- a/zebra/zebra_rib.c
+++ b/zebra/zebra_rib.c
@@ -1201,7 +1201,7 @@
  * it and processed by rib_process(). Don't process more, than one RN record; operate
  * only in the specified sub-queue.
  */
-unsigned int
+static unsigned int
 process_subq (struct list * subq, u_char qindex)
 {
   struct listnode *lnode;
@@ -1238,7 +1238,8 @@
 /* Look into the RN and queue it into one or more priority queues, increasing the size
  * for each data push done.
  */
-void rib_meta_queue_add (struct meta_queue *mq, struct route_node *rn)
+static void
+rib_meta_queue_add (struct meta_queue *mq, struct route_node *rn)
 {
   u_char qindex;
   struct rib *rib;
@@ -1336,8 +1337,8 @@
 }
 
 /* Create new meta queue. A destructor function doesn't seem to be necessary here. */
-struct meta_queue *
-meta_queue_new ()
+static struct meta_queue *
+meta_queue_new (void)
 {
   struct meta_queue *new;
   unsigned i, failed = 0;