diff --git a/src/src/radio.c b/src/src/radio.c
index 783608c1..29f67e46 100644
--- a/src/src/radio.c
+++ b/src/src/radio.c
@@ -533,8 +533,8 @@ otError otPlatRadioTransmit(otInstance *aInstance, otRadioFrame *aFrame)
 
     if (aFrame->mInfo.mTxInfo.mTxDelay != 0)
     {
-        if (!nrf_802154_transmit_raw_at(&aFrame->mPsdu[-1], true, aFrame->mInfo.mTxInfo.mTxDelayBaseTime,
-                                        aFrame->mInfo.mTxInfo.mTxDelay, aFrame->mChannel))
+        if (!nrf_802154_transmit_raw_at(&aFrame->mPsdu[-1], true, aFrame->mInfo.mTxInfo.mTxTime - SAFE_DELTA,
+                                        SAFE_DELTA, aFrame->mChannel))
         {
             error = OT_ERROR_INVALID_STATE;
         }