diff --git a/src/modules/airspeed_selector/airspeed_selector_main.cpp b/src/modules/airspeed_selector/airspeed_selector_main.cpp
index c0d6e1e7d5..090456e173 100644
--- a/src/modules/airspeed_selector/airspeed_selector_main.cpp
+++ b/src/modules/airspeed_selector/airspeed_selector_main.cpp
@@ -444,8 +444,10 @@ AirspeedModule::Run()
 
 			// save estimated airspeed scale after disarm if airspeed is valid and scale has changed
 			if (!armed && _armed_prev) {
+				const float scale_change_threshold = _param_airspeed_scale[i] * 0.03f; // 3% relative change threshold
+
 				if (_param_aspd_scale_apply.get() > 0 && _airspeed_validator[i].get_airspeed_valid()
-				    && fabsf(_airspeed_validator[i].get_CAS_scale_validated() - _param_airspeed_scale[i]) > FLT_EPSILON) {
+				    && fabsf(_airspeed_validator[i].get_CAS_scale_validated() - _param_airspeed_scale[i]) > scale_change_threshold) {
 
 					mavlink_log_info(&_mavlink_log_pub, "Airspeed sensor Nr. %d ASPD_SCALE updated: %.4f --> %.4f", i + 1,
 							 (double)_param_airspeed_scale[i],
diff --git a/src/modules/airspeed_selector/airspeed_selector_params.c b/src/modules/airspeed_selector/airspeed_selector_params.c
index 34d74cbfc5..7b50d9c4ea 100644
--- a/src/modules/airspeed_selector/airspeed_selector_params.c
+++ b/src/modules/airspeed_selector/airspeed_selector_params.c
@@ -96,7 +96,6 @@ PARAM_DEFINE_INT32(ASPD_SCALE_APPLY, 2);
  * @max 2.0
  * @decimal 2
  * @group Airspeed Validator
- * @volatile
  */
 PARAM_DEFINE_FLOAT(ASPD_SCALE_1, 1.0f);
 
@@ -109,7 +108,6 @@ PARAM_DEFINE_FLOAT(ASPD_SCALE_1, 1.0f);
  * @max 2.0
  * @decimal 2
  * @group Airspeed Validator
- * @volatile
  */
 PARAM_DEFINE_FLOAT(ASPD_SCALE_2, 1.0f);
 
@@ -122,7 +120,6 @@ PARAM_DEFINE_FLOAT(ASPD_SCALE_2, 1.0f);
  * @max 2.0
  * @decimal 2
  * @group Airspeed Validator
- * @volatile
  */
 PARAM_DEFINE_FLOAT(ASPD_SCALE_3, 1.0f);