diff --git a/libraries/MySensors/examples/GatewaySerial/GatewaySerial.ino b/libraries/MySensors/examples/GatewaySerial/GatewaySerial.ino
index 9eee4e8..21aee55 100644
--- a/libraries/MySensors/examples/GatewaySerial/GatewaySerial.ino
+++ b/libraries/MySensors/examples/GatewaySerial/GatewaySerial.ino
@@ -72,9 +72,11 @@
 // Digital pin used for inclusion mode button
 #define MY_INCLUSION_MODE_BUTTON_PIN  3 
 
+#ifndef MY_DEFAULT_ERR_LED_PIN
 #define MY_DEFAULT_ERR_LED_PIN 4  // Error led pin
 #define MY_DEFAULT_RX_LED_PIN  6  // Receive led pin
 #define MY_DEFAULT_TX_LED_PIN  5  // the PCB, on board LED
+#endif
 
 #include <SPI.h>
 #include <MySensor.h>