diff --git a/examples/LoRaWAN/LoRaWAN_End_Device_Reference/LoRaWAN_End_Device_Reference.ino b/examples/LoRaWAN/LoRaWAN_End_Device_Reference/LoRaWAN_End_Device_Reference.ino
index 225a65cf..2a908f28 100644
--- a/examples/LoRaWAN/LoRaWAN_End_Device_Reference/LoRaWAN_End_Device_Reference.ino
+++ b/examples/LoRaWAN/LoRaWAN_End_Device_Reference/LoRaWAN_End_Device_Reference.ino
@@ -259,7 +259,7 @@ void loop() {
 
     uint8_t margin = 0;
     uint8_t gwCnt = 0;
-    if(node.getMacLinkCheckAns(&margin, &gwCnt)) {
+    if(node.getMacLinkCheckAns(&margin, &gwCnt) == RADIOLIB_ERR_NONE) {
       Serial.print(F("[LoRaWAN] LinkCheck margin:\t"));
       Serial.println(margin);
       Serial.print(F("[LoRaWAN] LinkCheck count:\t"));
@@ -268,7 +268,7 @@ void loop() {
 
     uint32_t networkTime = 0;
     uint8_t fracSecond = 0;
-    if(node.getMacDeviceTimeAns(&networkTime, &fracSecond, true)) {
+    if(node.getMacDeviceTimeAns(&networkTime, &fracSecond, true) == RADIOLIB_ERR_NONE) {
       Serial.print(F("[LoRaWAN] DeviceTime Unix:\t"));
       Serial.println(networkTime);
       Serial.print(F("[LoRaWAN] LinkCheck second:\t1/"));