diff --git a/keywords.txt b/keywords.txt
index 8548153e..17bb7acd 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -154,7 +154,8 @@ enableAES	KEYWORD2
 disableAES	KEYWORD2
 getTemperature	KEYWORD2
 setAmbientTemperature	KEYWORD2
-setLnaTestBoost KEYWORD2
+setLnaTestBoost	KEYWORD2
+setOokFixedThreshold	KEYWORD2
 
 # CC1101-specific
 getLQI	KEYWORD2
diff --git a/src/modules/RF69/RF69.cpp b/src/modules/RF69/RF69.cpp
index 9b96143a..3a509772 100644
--- a/src/modules/RF69/RF69.cpp
+++ b/src/modules/RF69/RF69.cpp
@@ -388,6 +388,10 @@ int16_t RF69::setOokThresholdType(uint8_t type) {
   return(_mod->SPIsetRegValue(RF69_REG_OOK_PEAK, type, 7, 3, 5));
 }
 
+int16_t RF69::setOokFixedThreshold(uint8_t value) {
+  return(_mod->SPIsetRegValue(RF69_REG_OOK_FIX, value, 7, 0, 5));
+}
+
 int16_t RF69::setFrequency(float freq) {
   // check allowed frequency range
   if(!(((freq > 290.0) && (freq < 340.0)) ||
diff --git a/src/modules/RF69/RF69.h b/src/modules/RF69/RF69.h
index d2acc5e8..de230933 100644
--- a/src/modules/RF69/RF69.h
+++ b/src/modules/RF69/RF69.h
@@ -757,6 +757,15 @@ class RF69: public PhysicalLayer {
     */
     int16_t setOokThresholdType(uint8_t type);
 
+    /*!
+      \brief Fixed threshold for the Data Slicer in OOK mode or floor threshold for the Data Slicer in OOK when Peak mode is used.
+
+      \param value Fixed threshold value (in dB) in the OOK demodulator. Used when OokThresType = RF69_OOK_THRESH_FIXED.
+
+      \returns \ref status_codes
+    */
+    int16_t setOokFixedThreshold(uint8_t value);
+
     /*!
       \brief Set modem in fixed packet length mode.