diff --git a/src/modules/ekf2/ekf2_params.c b/src/modules/ekf2/ekf2_params.c
index 3efbb0983cf3..7ace0d0dd122 100644
--- a/src/modules/ekf2/ekf2_params.c
+++ b/src/modules/ekf2/ekf2_params.c
@@ -1129,6 +1129,7 @@ PARAM_DEFINE_INT32(EKF2_RNG_AID, 0);
  * @group EKF2
  * @min 0.1
  * @max 2
+ * @unit m/s
  */
 PARAM_DEFINE_FLOAT(EKF2_RNG_A_VMAX, 1.0f);
 
@@ -1141,6 +1142,7 @@ PARAM_DEFINE_FLOAT(EKF2_RNG_A_VMAX, 1.0f);
  * @group EKF2
  * @min 1.0
  * @max 10.0
+ * @unit m
  */
 PARAM_DEFINE_FLOAT(EKF2_RNG_A_HMAX, 5.0f);