diff --git a/conf/messages.xml b/conf/messages.xml
index ca7bf5f83c..fd4690a045 100644
--- a/conf/messages.xml
+++ b/conf/messages.xml
@@ -98,8 +98,6 @@
 
    <message name="CALIBRATION" id="14">
      <field name="climb_sum_err" type="float" format="%.1f"></field>
-     <field name="climb_pgain" type="float" format="%.3f"></field> 
-     <field name="course_pgain" type="float" format="%.3f"></field>
      <field name="climb_gaz_submode" type="uint8"></field>
    </message>
 
@@ -281,6 +279,11 @@
     <field name="alt" type="int32" unit="cm"></field>
  </message>
 
+ <message name="CHRONO" id="48">
+    <field name="tag" type="uint8"/>
+    <field name="time" type="uint32" unit="us"></field>
+ </message>
+
 
   <message name="PPM" id="100">
     <field name="ppm_rate" type="uint8"></field>