diff --git a/src/protocols/LoRaWAN/LoRaWAN.cpp b/src/protocols/LoRaWAN/LoRaWAN.cpp
index a4c60404..344d9450 100644
--- a/src/protocols/LoRaWAN/LoRaWAN.cpp
+++ b/src/protocols/LoRaWAN/LoRaWAN.cpp
@@ -183,11 +183,12 @@ int16_t LoRaWANNode::sendReceive(uint8_t* dataUp, size_t lenUp, uint8_t fPort, u
     eventUp->nbTrans = trans;
   }
 
+  #if !RADIOLIB_STATIC_ONLY
+    delete[] uplinkMsg;
+  #endif
+
   // if a hardware error occurred, return
   if(state < RADIOLIB_ERR_NONE) {
-    #if !RADIOLIB_STATIC_ONLY
-    delete[] uplinkMsg;
-    #endif
     return(state);
   }
 
@@ -938,6 +939,9 @@ int16_t LoRaWANNode::activateOTAA(uint8_t joinDr, LoRaWANJoinEvent_t *joinEvent)
   this->devNonce += 1;
   LoRaWANNode::hton<uint16_t>(&this->bufferNonces[RADIOLIB_LORAWAN_NONCES_DEV_NONCE], this->devNonce);
 
+  // set the Time on Air of the JoinRequest
+  this->lastToA = this->phyLayer->getTimeOnAir(RADIOLIB_LORAWAN_JOIN_REQUEST_LEN) / 1000;
+
   // configure Rx1 and Rx2 delay for JoinAccept message - these are re-configured once a valid JoinAccept is received
   this->rxDelays[1] = RADIOLIB_LORAWAN_JOIN_ACCEPT_DELAY_1_MS;
   this->rxDelays[2] = RADIOLIB_LORAWAN_JOIN_ACCEPT_DELAY_2_MS;
@@ -1481,7 +1485,7 @@ int16_t LoRaWANNode::parseDownlink(uint8_t* data, size_t* len, LoRaWANEvent_t* e
   // check the address
   uint32_t addr = LoRaWANNode::ntoh<uint32_t>(&downlinkMsg[RADIOLIB_LORAWAN_FHDR_DEV_ADDR_POS]);
   if(addr != this->devAddr) {
-    RADIOLIB_DEBUG_PROTOCOL_PRINTLN("Device address mismatch, expected 0x%08X, got 0x%08X", this->devAddr, addr);
+    RADIOLIB_DEBUG_PROTOCOL_PRINTLN("Device address mismatch, expected 0x%08lX, got 0x%08lX", this->devAddr, addr);
     #if !RADIOLIB_STATIC_ONLY
       delete[] downlinkMsg;
     #endif
@@ -3197,7 +3201,7 @@ bool LoRaWANNode::verifyMIC(uint8_t* msg, size_t len, uint8_t* key) {
   // calculate the expected value and compare
   uint32_t micCalculated = generateMIC(msg, len - sizeof(uint32_t), key);
   if(micCalculated != micReceived) {
-    RADIOLIB_DEBUG_PROTOCOL_PRINTLN("MIC mismatch, expected %08x, got %08x", micCalculated, micReceived);
+    RADIOLIB_DEBUG_PROTOCOL_PRINTLN("MIC mismatch, expected %08lx, got %08lx", micCalculated, micReceived);
     return(false);
   }
 
diff --git a/src/protocols/LoRaWAN/LoRaWAN.h b/src/protocols/LoRaWAN/LoRaWAN.h
index 723c4624..6ff198df 100644
--- a/src/protocols/LoRaWAN/LoRaWAN.h
+++ b/src/protocols/LoRaWAN/LoRaWAN.h
@@ -605,7 +605,7 @@ class LoRaWANNode {
       \param initialDr The datarate at which to send the first uplink and any subsequent uplinks (unless ADR is enabled).
       \returns \ref status_codes
     */
-    int16_t activateABP(uint8_t initialDr = RADIOLIB_LORAWAN_DATA_RATE_UNUSED);
+    virtual int16_t activateABP(uint8_t initialDr = RADIOLIB_LORAWAN_DATA_RATE_UNUSED);
 
     /*! \brief Whether there is an ongoing session active */
     bool isActivated();