diff --git a/src/FirmwarePlugin/PX4/PX4ParameterFactMetaData.xml b/src/FirmwarePlugin/PX4/PX4ParameterFactMetaData.xml
index 5e05e06..a5bcc14 100644
--- a/src/FirmwarePlugin/PX4/PX4ParameterFactMetaData.xml
+++ b/src/FirmwarePlugin/PX4/PX4ParameterFactMetaData.xml
@@ -3532,31 +3532,31 @@
   </group>
   <group name="Land Detector">
     <parameter name="LNDFW_AIRSPD_MAX" default="6.00" type="FLOAT">
-      <short_desc>Airspeed max</short_desc>
+      <short_desc>Fixed-wing land detector: Max airspeed</short_desc>
       <long_desc>Maximum airspeed allowed in the landed state</long_desc>
-      <min>4</min>
+      <min>2</min>
       <max>20</max>
       <unit>m/s</unit>
       <decimal>1</decimal>
     </parameter>
     <parameter name="LNDFW_VEL_XY_MAX" default="5.0" type="FLOAT">
-      <short_desc>Fixedwing max horizontal velocity</short_desc>
-      <long_desc>Maximum horizontal velocity allowed in the landed state</long_desc>
+      <short_desc>Fixed-wing land detector: Max horizontal velocity threshold</short_desc>
+      <long_desc>Maximum horizontal velocity allowed in the landed state. A factor of 0.7 is applied in case of airspeed-less flying (either because no sensor is present or sensor data got invalid in flight).</long_desc>
       <min>0.5</min>
       <max>10</max>
       <unit>m/s</unit>
       <decimal>1</decimal>
     </parameter>
-    <parameter name="LNDFW_VEL_Z_MAX" default="3.0" type="FLOAT">
-      <short_desc>Fixedwing max climb rate</short_desc>
-      <long_desc>Maximum vertical velocity allowed in the landed state</long_desc>
+    <parameter name="LNDFW_VEL_Z_MAX" default="2.0" type="FLOAT">
+      <short_desc>Fixed-wing land detector: Max vertiacal velocity threshold</short_desc>
+      <long_desc>Maximum vertical velocity allowed in the landed state. A factor of 0.7 is applied in case of airspeed-less flying (either because no sensor is present or sensor data got invalid in flight).</long_desc>
       <min>0.1</min>
       <max>20</max>
       <unit>m/s</unit>
       <decimal>1</decimal>
     </parameter>
     <parameter name="LNDFW_XYACC_MAX" default="8.0" type="FLOAT">
-      <short_desc>Fixedwing max horizontal acceleration</short_desc>
+      <short_desc>Fixed-wing land detector: Max horizontal acceleration</short_desc>
       <long_desc>Maximum horizontal (x,y body axes) acceleration allowed in the landed state</long_desc>
       <min>2</min>
       <max>15</max>