diff --git a/lib/command.c b/lib/command.c
index a789b0f..8870a42 100644
--- a/lib/command.c
+++ b/lib/command.c
@@ -105,7 +105,7 @@
 };
 
 /* Default motd string. */
-const char *default_motd =
+static const char *default_motd =
 "\r\n\
 Hello, this is " QUAGGA_PROGNAME " (version " QUAGGA_VERSION ").\r\n\
 " QUAGGA_COPYRIGHT "\r\n\