diff --git a/RFM69.cpp b/RFM69.cpp
index ebbc882..8466887 100644
--- a/RFM69.cpp
+++ b/RFM69.cpp
@@ -108,7 +108,12 @@ bool RFM69::initialize(uint8_t freqBand, uint16_t nodeID, uint8_t networkID)
 
   digitalWrite(_slaveSelectPin, HIGH);
   pinMode(_slaveSelectPin, OUTPUT);
-  SPI.begin();
+#if defined(ESP32)
+    SPI.begin(18,19,23,5); //SPI3  (SCK,MISO,MOSI,CS)
+    //SPI.begin(14,12,13,15); //SPI2   (SCK,MISO,MOSI,CS) 
+#else
+    SPI.begin();
+#endif
   
 #ifdef SPI_HAS_TRANSACTION
   _settings = SPISettings(4000000, MSBFIRST, SPI_MODE0);
diff --git a/RFM69.h b/RFM69.h
index a791053..4f4defc 100644
--- a/RFM69.h
+++ b/RFM69.h
@@ -134,6 +134,9 @@
 #elif defined(ESP8266)
   #define RF69_IRQ_PIN          4
   #define RF69_SPI_CS           15
+#elif defined(ESP32)
+  #define RF69_IRQ_PIN          2
+  #define RF69_SPI_CS           5
 #else
   #define RF69_IRQ_PIN          2
 #endif