diff --git a/src/modules/SX126x/SX126x.cpp b/src/modules/SX126x/SX126x.cpp
index de081201..a4cb9eee 100644
--- a/src/modules/SX126x/SX126x.cpp
+++ b/src/modules/SX126x/SX126x.cpp
@@ -633,14 +633,14 @@ int16_t SX126x::setCodingRate(uint8_t cr) {
   return(setModulationParams(_sf, _bw, _cr));
 }
 
-int16_t SX126x::setSyncWord(uint8_t syncWord) {
+int16_t SX126x::setSyncWord(uint8_t syncWord, uint8_t controlBits) {
   // check active modem
   if(getPacketType() != SX126X_PACKET_TYPE_LORA) {
     return(ERR_WRONG_MODEM);
   }
 
   // update register
-  uint8_t data[2] = {(uint8_t)((syncWord & 0xF0) | 0x04), (uint8_t)(((syncWord & 0x0F) << 4) | 0x04)};
+  uint8_t data[2] = {(uint8_t)((syncWord & 0xF0) | ((controlBits & 0xF0) >> 4)), (uint8_t)(((syncWord & 0x0F) << 4) | (controlBits & 0x0F))};
   return(writeRegister(SX126X_REG_LORA_SYNC_WORD_MSB, data, 2));
 }
 
diff --git a/src/modules/SX126x/SX126x.h b/src/modules/SX126x/SX126x.h
index 8267f4cc..a0173da5 100644
--- a/src/modules/SX126x/SX126x.h
+++ b/src/modules/SX126x/SX126x.h
@@ -586,9 +586,11 @@ class SX126x: public PhysicalLayer {
 
       \param syncWord LoRa sync word to be set.
 
+      \param controlBits Undocumented control bits, required for compatibility purposes.
+
       \returns \ref status_codes
     */
-    int16_t setSyncWord(uint8_t syncWord);
+    int16_t setSyncWord(uint8_t syncWord, uint8_t controlBits = 0x44);
 
     /*!
       \brief Sets current protection limit. Can be set in 0.25 mA steps.