diff --git a/arch/arm/src/nrf52/nrf52_rtc.c b/arch/arm/src/nrf52/nrf52_rtc.c
index 44922961ace..1053ee9c368 100644
--- a/arch/arm/src/nrf52/nrf52_rtc.c
+++ b/arch/arm/src/nrf52/nrf52_rtc.c
@@ -570,7 +570,7 @@ static int nrf52_rtc_checkint(FAR struct nrf52_rtc_dev_s *dev, uint8_t s)
 
       case NRF52_RTC_EVT_COMPARE1:
         {
-          ret = nrf52_rtc_getreg(dev, NRF52_RTC_EVENTS_COMPARE_OFFSET(0));
+          ret = nrf52_rtc_getreg(dev, NRF52_RTC_EVENTS_COMPARE_OFFSET(1));
           break;
         }