diff --git a/src/modules/ekf2/ekf2_main.cpp b/src/modules/ekf2/ekf2_main.cpp
index 70743006cb..60303e37bc 100644
--- a/src/modules/ekf2/ekf2_main.cpp
+++ b/src/modules/ekf2/ekf2_main.cpp
@@ -260,6 +260,7 @@ private:
 
 	// range finder fusion
 	control::BlockParamExtFloat _range_noise;		// observation noise for range finder measurements (m)
+	control::BlockParamExtFloat _range_noise_scaler; // scale factor from range to range noise (m/m)
 	control::BlockParamExtFloat _range_innov_gate;	// range finder fusion innovation consistency gate size (STD)
 	control::BlockParamExtFloat _rng_gnd_clearance;	// minimum valid value for range when on ground (m)
 	control::BlockParamExtFloat _rng_pitch_offset;	// range sensor pitch offset (rad)
@@ -394,6 +395,7 @@ Ekf2::Ekf2():
 	_fusion_mode(this, "EKF2_AID_MASK", false, _params->fusion_mode),
 	_vdist_sensor_type(this, "EKF2_HGT_MODE", false, _params->vdist_sensor_type),
 	_range_noise(this, "EKF2_RNG_NOISE", false, _params->range_noise),
+	_range_noise_scaler(this, "EKF2_RNG_SFE", false, _params->range_noise_scaler),
 	_range_innov_gate(this, "EKF2_RNG_GATE", false, _params->range_innov_gate),
 	_rng_gnd_clearance(this, "EKF2_MIN_RNG", false, _params->rng_gnd_clearance),
 	_rng_pitch_offset(this, "EKF2_RNG_PITCH", false, _params->rng_sens_pitch),
diff --git a/src/modules/ekf2/ekf2_params.c b/src/modules/ekf2/ekf2_params.c
index 456d46665c..156875f230 100644
--- a/src/modules/ekf2/ekf2_params.c
+++ b/src/modules/ekf2/ekf2_params.c
@@ -577,6 +577,18 @@ PARAM_DEFINE_INT32(EKF2_HGT_MODE, 0);
  */
 PARAM_DEFINE_FLOAT(EKF2_RNG_NOISE, 0.1f);
 
+/**
+ * Range finder range depednat noise scaler.
+ *
+ * Specifies the increase in range finder noise with range.
+ *
+ * @group EKF2
+ * @min 0.0
+ * @max 0.2
+ * @unit m/m
+ */
+PARAM_DEFINE_FLOAT(EKF2_RNG_SFE, 0.05f);
+
 /**
  * Gate size for range finder fusion
  *