diff --git a/chip/npcx/system.c b/chip/npcx/system.c
index bda6fe6e3a..2e8493be98 100644
--- a/chip/npcx/system.c
+++ b/chip/npcx/system.c
@@ -417,7 +417,6 @@ static char system_to_hex(uint8_t x)
  * stores wakeup time in seconds.
  * Set seconds = 0 to disable the alarm
  */
-#define EC_RTC_ALARM_CLEAR 0
 void system_set_rtc_alarm(uint32_t seconds, uint32_t microseconds)
 {
 	uint32_t cur_secs, alarm_secs;
diff --git a/include/ec_commands.h b/include/ec_commands.h
index 18f5f839f7..c69440fb06 100644
--- a/include/ec_commands.h
+++ b/include/ec_commands.h
@@ -2147,6 +2147,9 @@ struct ec_response_rtc {
 #define EC_CMD_RTC_SET_VALUE 0x46
 #define EC_CMD_RTC_SET_ALARM 0x47
 
+/* Pass as time param to SET_ALARM to clear the current alarm */
+#define EC_RTC_ALARM_CLEAR 0
+
 /*****************************************************************************/
 /* Port80 log access */