diff --git a/src/LoRa.cpp b/src/LoRa.cpp
index 4296e76..16be400 100644
--- a/src/LoRa.cpp
+++ b/src/LoRa.cpp
@@ -30,6 +30,7 @@
 #define REG_FREQ_ERROR_LSB       0x2a
 #define REG_RSSI_WIDEBAND        0x2c
 #define REG_DETECTION_OPTIMIZE   0x31
+#define REG_INVERTIQ             0x33 // (default 0x27 or 0x40)
 #define REG_DETECTION_THRESHOLD  0x37
 #define REG_SYNC_WORD            0x39
 #define REG_DIO_MAPPING_1        0x40
@@ -615,4 +616,9 @@ void LoRaClass::onDio0Rise()
   LoRa.handleDio0Rise();
 }
 
+void LoRaClass::invertIQ(boolean invert)
+{
+  writeRegister(REG_INVERTIQ, (uint8_t) (invert == false ?  0x27 : 0x40));
+}
+
 LoRaClass LoRa;