diff --git a/src/modules/SX127x/SX127x.cpp b/src/modules/SX127x/SX127x.cpp
index 20125c57..7d850e24 100644
--- a/src/modules/SX127x/SX127x.cpp
+++ b/src/modules/SX127x/SX127x.cpp
@@ -1075,7 +1075,7 @@ int16_t SX127x::setRSSIConfig(uint8_t smoothingSamples, int8_t offset) {
   RADIOLIB_CHECK_RANGE(offset, -16, 15, RADIOLIB_ERR_INVALID_RSSI_OFFSET);
 
   // set new register values
-  state = _mod->SPIsetRegValue(RADIOLIB_SX127X_REG_RSSI_CONFIG, offset, 7, 3);
+  state = _mod->SPIsetRegValue(RADIOLIB_SX127X_REG_RSSI_CONFIG, offset << 3, 7, 3);
   state |= _mod->SPIsetRegValue(RADIOLIB_SX127X_REG_RSSI_CONFIG, smoothingSamples, 2, 0);
   return(state);
 }