diff --git a/src/modules/SX127x/SX127x.cpp b/src/modules/SX127x/SX127x.cpp
index dc150637..ef495e67 100644
--- a/src/modules/SX127x/SX127x.cpp
+++ b/src/modules/SX127x/SX127x.cpp
@@ -844,10 +844,23 @@ int16_t SX127x::setOokThresholdType(uint8_t type) {
 
   int16_t state = ERR_NONE;
   state = _mod->SPIsetRegValue(SX127X_REG_OOK_PEAK, type, 4, 3, 5);
-  
+
   return(state);
 }
 
+int16_t SX127x::setOokFixedOrFloorThreshold(short int value) {
+  // check active modem
+  if(getActiveModem() != SX127X_FSK_OOK) {
+    return(ERR_WRONG_MODEM);
+  }
+
+  int16_t state = ERR_NONE;
+  state = _mod->SPIsetRegValue(SX127X_REG_OOK_FIX, value, 7, 0, 5);
+
+  return(state);
+}
+
+
 
 int16_t SX127x::setOOK(bool enableOOK) {
   // check active modem
diff --git a/src/modules/SX127x/SX127x.h b/src/modules/SX127x/SX127x.h
index 49170d51..94a1bbcf 100644
--- a/src/modules/SX127x/SX127x.h
+++ b/src/modules/SX127x/SX127x.h
@@ -868,6 +868,15 @@ class SX127x: public PhysicalLayer {
     */
     int16_t setOokThresholdType(uint8_t type);
 
+    /*!
+      \brief Fixed threshold for the Data Slicer in OOK mode
+             Floor threshold for the Data Slicer in OOK when Peak mode is used
+
+      \param value (in DB)
+
+      \returns \ref status_codes
+    */
+    int16_t setOokFixedOrFloorThreshold(short int value);
 
      /*!
       \brief Query modem for the packet length of received payload.