diff --git a/lib/Hoymiles/src/HoymilesRadio.cpp b/lib/Hoymiles/src/HoymilesRadio.cpp
index d2cec44..5a370c6 100644
--- a/lib/Hoymiles/src/HoymilesRadio.cpp
+++ b/lib/Hoymiles/src/HoymilesRadio.cpp
@@ -8,7 +8,7 @@ void HoymilesRadio::init()
 {
     _dtuSerial.u64 = 0;
 
-    _radio.reset(new RF24(4, 5));
+    _radio.reset(new RF24(PIN_CE, PIN_CS));
     _radio->begin();
     _radio->setDataRate(RF24_250KBPS);
     _radio->enableDynamicPayloads();
@@ -22,7 +22,7 @@ void HoymilesRadio::init()
         Serial.println(F("Connection error!!"));
     }
 
-    attachInterrupt(digitalPinToInterrupt(16), std::bind(&HoymilesRadio::handleIntr, this), FALLING);
+    attachInterrupt(digitalPinToInterrupt(PIN_IRQ), std::bind(&HoymilesRadio::handleIntr, this), FALLING);
 
     openReadingPipe();
     _radio->startListening();
diff --git a/lib/Hoymiles/src/HoymilesRadio.h b/lib/Hoymiles/src/HoymilesRadio.h
index 024bc34..2105c75 100644
--- a/lib/Hoymiles/src/HoymilesRadio.h
+++ b/lib/Hoymiles/src/HoymilesRadio.h
@@ -14,6 +14,10 @@
 
 #define MAX_RESEND_COUNT 3
 
+#define PIN_IRQ 16
+#define PIN_CE 4
+#define PIN_CS 5
+
 class HoymilesRadio {
 public:
     void init();