diff --git a/src/modules/SX128x/SX128x.cpp b/src/modules/SX128x/SX128x.cpp
index 4c6d17b7..c4167ee3 100644
--- a/src/modules/SX128x/SX128x.cpp
+++ b/src/modules/SX128x/SX128x.cpp
@@ -695,7 +695,7 @@ int16_t SX128x::setSpreadingFactor(uint8_t sf) {
   int16_t state = setModulationParams(this->spreadingFactor, this->bandwidth, this->codingRateLoRa);
   RADIOLIB_ASSERT(state);
 
-  // update mystery register in LoRa mode - SX1280 datasheet v3.0 section 13.4.1
+  // update mystery register in LoRa mode - SX1280 datasheet rev 3.2 section 14.4.1
   if(modem == RADIOLIB_SX128X_PACKET_TYPE_LORA) {
     uint8_t data = 0;
     if((this->spreadingFactor == RADIOLIB_SX128X_LORA_SF_5) || (this->spreadingFactor == RADIOLIB_SX128X_LORA_SF_6)) {
@@ -706,6 +706,15 @@ int16_t SX128x::setSpreadingFactor(uint8_t sf) {
       data = 0x32;
     }
     state = SX128x::writeRegister(RADIOLIB_SX128X_REG_LORA_SF_CONFIG, &data, 1);
+    RADIOLIB_ASSERT(state);
+
+    // this register must also be updated for some reason
+    state = SX128x::readRegister(RADIOLIB_SX128X_REG_FREQ_ERROR_CORRECTION, &data, 1);
+    RADIOLIB_ASSERT(state);
+
+    data |= 0x01;
+    state = SX128x::writeRegister(RADIOLIB_SX128X_REG_FREQ_ERROR_CORRECTION, &data, 1);
+    RADIOLIB_ASSERT(state);
   }
 
   return(state);