diff --git a/pkg/openthread/contrib/netdev/openthread_netdev.c b/pkg/openthread/contrib/netdev/openthread_netdev.c
index ecd243a1a4..c815f1f938 100644
--- a/pkg/openthread/contrib/netdev/openthread_netdev.c
+++ b/pkg/openthread/contrib/netdev/openthread_netdev.c
@@ -67,8 +67,10 @@ static void _event_cb(netdev_t *dev, netdev_event_t event) {
             recv_pkt(sInstance, dev);
             break;
         case NETDEV_EVENT_TX_COMPLETE:
+#ifndef MODULE_NETDEV_NEW_API
         case NETDEV_EVENT_TX_NOACK:
         case NETDEV_EVENT_TX_MEDIUM_BUSY:
+#endif
             DEBUG("openthread_netdev: Transmission of a packet\n");
             send_pkt(sInstance, dev, event);
             break;
diff --git a/pkg/openthread/contrib/platform_radio.c b/pkg/openthread/contrib/platform_radio.c
index a91a1419cc..e999d174d7 100644
--- a/pkg/openthread/contrib/platform_radio.c
+++ b/pkg/openthread/contrib/platform_radio.c
@@ -172,6 +172,27 @@ void recv_pkt(otInstance *aInstance, netdev_t *dev)
 }
 
 /* Called upon TX event */
+#ifdef MODULE_NETDEV_NEW_API
+void send_pkt(otInstance *aInstance, netdev_t *dev, netdev_event_t event)
+{
+    (void)event;
+
+    assert(dev->driver->confirm_send);
+
+    int res = dev->driver->confirm_send(dev, NULL);
+    DEBUG("openthread: confirm_send returned %d\n", res);
+
+    if (res > 0) {
+        otPlatRadioTxDone(aInstance, &sTransmitFrame, NULL, OT_ERROR_NONE);
+    } else if (res == -EBUSY) {
+        otPlatRadioTxDone(aInstance, &sTransmitFrame, NULL, OT_ERROR_CHANNEL_ACCESS_FAILURE);
+    } else if (res == -EHOSTUNREACH) {
+        otPlatRadioTxDone(aInstance, &sTransmitFrame, NULL, OT_ERROR_NO_ACK);
+    } else {
+        otPlatRadioTxDone(aInstance, &sTransmitFrame, NULL, OT_ERROR_FAILED);
+    }
+}
+#else
 void send_pkt(otInstance *aInstance, netdev_t *dev, netdev_event_t event)
 {
     (void)dev;
@@ -198,6 +219,7 @@ void send_pkt(otInstance *aInstance, netdev_t *dev, netdev_event_t event)
             break;
     }
 }
+#endif
 
 /* OpenThread will call this for setting PAN ID */
 void otPlatRadioSetPanId(otInstance *aInstance, uint16_t panid)