diff --git a/avr/devices/all/sendvalue.asm b/avr/devices/all/sendvalue.asm
index 0a870a6..d97ac38 100644
--- a/avr/devices/all/sendvalue.asm
+++ b/avr/devices/all/sendvalue.asm
@@ -23,6 +23,7 @@
 ; @param  R19:R18 value
 ; @param  R21:R20 denom (e.g. 100, meaning value must be divided by 100)
 ; @param  R22     value type
+; @return CFLAG on success, cleared on error
 
 Main_SendValueReport:
   push r17
@@ -52,6 +53,7 @@ Main_SendValueReport_end:
 ; @param  R21:R20 denom (e.g. 100, meaning value must be divided by 100)
 ; @param  R23     command
 ; @param  R25:R24 ref msg id
+; @return CFLAG on success, cleared on error
 
 Main_SendValueResponse:
   push r17