diff --git a/src/utils.c b/src/utils.c
index aa1326f..c861195 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -276,7 +276,7 @@ ins_char (int pos, int ch, char *str)
   *str = ch;
 }
 
-void
+static void
 bell (void)
 {
   printf ("\a");