diff --git a/ripd/rip_debug.c b/ripd/rip_debug.c
index d788ea7..64dc27c 100644
--- a/ripd/rip_debug.c
+++ b/ripd/rip_debug.c
@@ -203,7 +203,7 @@
 }
 
 /* Debug node. */
-struct cmd_node debug_node =
+static struct cmd_node debug_node =
 {
   DEBUG_NODE,
   "",				/* Debug node has no interface. */
diff --git a/ripd/rip_interface.c b/ripd/rip_interface.c
index 54d357c..827663a 100644
--- a/ripd/rip_interface.c
+++ b/ripd/rip_interface.c
@@ -2051,7 +2051,7 @@
   return 0;
 }
 
-struct cmd_node interface_node =
+static struct cmd_node interface_node =
 {
   INTERFACE_NODE,
   "%s(config-if)# ",
diff --git a/ripd/rip_zebra.c b/ripd/rip_zebra.c
index b924199..7729d9b 100644
--- a/ripd/rip_zebra.c
+++ b/ripd/rip_zebra.c
@@ -651,7 +651,7 @@
 }
 
 /* Zebra node structure. */
-struct cmd_node zebra_node =
+static struct cmd_node zebra_node =
 {
   ZEBRA_NODE,
   "%s(config-router)# ",
diff --git a/ripd/ripd.c b/ripd/ripd.c
index cb2603d..0e3f877 100644
--- a/ripd/ripd.c
+++ b/ripd/ripd.c
@@ -3680,7 +3680,7 @@
 }
 
 /* RIP node structure. */
-struct cmd_node rip_node =
+static struct cmd_node rip_node =
 {
   RIP_NODE,
   "%s(config-router)# ",