diff --git a/cpukit/libcsupport/include/clockdrv.h b/cpukit/libcsupport/include/clockdrv.h
index 985d5694bc..5d7a92c515 100644
--- a/cpukit/libcsupport/include/clockdrv.h
+++ b/cpukit/libcsupport/include/clockdrv.h
@@ -27,8 +27,6 @@ extern "C" {
 /* variables */
 
 extern volatile uint32_t   Clock_driver_ticks;
-extern rtems_device_major_number rtems_clock_major;
-extern rtems_device_minor_number rtems_clock_minor;
 
 /* default clock driver entry */