diff --git a/include/nuttx/arch.h b/include/nuttx/arch.h
index 9ab9da1f96..11971e54cd 100644
--- a/include/nuttx/arch.h
+++ b/include/nuttx/arch.h
@@ -2544,7 +2544,7 @@ void nxsched_alarm_tick_expiration(clock_t ticks);
  ****************************************************************************/
 
 #ifdef CONFIG_SCHED_CPULOAD_EXTCLK
-void nxsched_process_cpuload_ticks(uint32_t ticks);
+void nxsched_process_cpuload_ticks(clock_t ticks);
 #  define nxsched_process_cpuload() nxsched_process_cpuload_ticks(1)
 #endif