diff --git a/src/heltec_unofficial.h b/src/heltec_unofficial.h
index df43f6c..7fbc1ff 100644
--- a/src/heltec_unofficial.h
+++ b/src/heltec_unofficial.h
@@ -18,7 +18,9 @@
 #endif
 
 // 'PRG' Button
+#ifndef BUTTON
 #define BUTTON    GPIO_NUM_0
+#endif
 // LED pin & PWM parameters
 #define LED_PIN   GPIO_NUM_35
 #define LED_FREQ  5000