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. */