diff --git a/ripngd/ripng_main.c b/ripngd/ripng_main.c
index a18ce9d..4877485 100644
--- a/ripngd/ripng_main.c
+++ b/ripngd/ripng_main.c
@@ -129,7 +129,7 @@
 }
 
 /* SIGHUP handler. */
-void 
+static void 
 sighup (void)
 {
   zlog_info ("SIGHUP received");
@@ -145,7 +145,7 @@
 }
 
 /* SIGINT handler. */
-void
+static void
 sigint (void)
 {
   zlog_notice ("Terminating on signal");
@@ -157,7 +157,7 @@
 }
 
 /* SIGUSR1 handler. */
-void
+static void
 sigusr1 (void)
 {
   zlog_rotate (NULL);