diff --git a/src/lib/fw_performance_model/performance_model_params.c b/src/lib/fw_performance_model/performance_model_params.c
index f43d029e1ec8..0c39d2ed39c5 100644
--- a/src/lib/fw_performance_model/performance_model_params.c
+++ b/src/lib/fw_performance_model/performance_model_params.c
@@ -121,8 +121,8 @@ PARAM_DEFINE_FLOAT(WEIGHT_GROSS, -1.0f);
 /**
  * Maximum climb rate
  *
- * This is the maximum climb rate (true airspeed) that the aircraft can achieve with
- * the throttle set to THR_MAX and the airspeed set to the
+ * This is the maximum calibrated climb rate that the aircraft can achieve with
+ * the throttle set to FW_THR_MAX and the airspeed set to the
  * trim value. For electric aircraft make sure this number can be
  * achieved towards the end of flight when the battery voltage has reduced.
  *
@@ -138,7 +138,7 @@ PARAM_DEFINE_FLOAT(FW_T_CLMB_MAX, 5.0f);
 /**
  * Minimum descent rate
  *
- * This is the sink rate (true airspeed) of the aircraft with the throttle
+ * This is the minimum calibrated sink rate of the aircraft with the throttle
  * set to THR_MIN and flown at the same airspeed as used
  * to measure FW_T_CLMB_MAX.
  *