diff -aruN a/beep.c b/beep.c
--- a/beep.c	2010-08-03 06:57:27.000000000 -0700
+++ b/beep.c	2010-11-09 17:17:01.000000000 -0800
@@ -44,8 +44,8 @@
    resets the counter to the original value, and starts over. The end
    result of this is a tone at approximately the desired frequency. :)
 */
-#ifndef CLOCK_TICK_RATE
-#define CLOCK_TICK_RATE 1193180
+#ifndef PIT_TICK_RATE
+#define PIT_TICK_RATE 1193180
 #endif
 
 #define VERSION_STRING "beep-1.3"
@@ -100,7 +100,7 @@
 void do_beep(int freq) {
   if (console_type == BEEP_TYPE_CONSOLE) {
     if(ioctl(console_fd, KIOCSOUND, freq != 0
-      ? (int)(CLOCK_TICK_RATE/freq)
+      ? (int)(PIT_TICK_RATE/freq)
       : freq) < 0) {
       printf("\a");  /* Output the only beep we can, in an effort to fall back on usefulness */
       perror("ioctl");