diff --git a/avr/modules/comproto/MESSAGES b/avr/modules/comproto/MESSAGES
index 7b63504..a265eaf 100644
--- a/avr/modules/comproto/MESSAGES
+++ b/avr/modules/comproto/MESSAGES
@@ -51,6 +51,24 @@ Offset Length Meaning
 
 
 
+RESULT Message
+==============
+
+Offset Length Meaning
+---------------------------------------------------------
+     0      1 destination address
+     1      1 remaining message length
+---------------------------------------------------------
+     2      1 command code
+     3      1 source address
+---------------------------------------------------------
+     4      2 ref msg id
+     6      1 result code
+---------------------------------------------------------
+     7      1 CRC8 byte
+
+
+
 Address Messages
 ================
 
@@ -107,7 +125,7 @@ Offset Length Meaning
      12     2 value
      14     2 denom
 ---------------------------------------------------------
-     15     1 CRC8 byte
+     16     1 CRC8 byte
 
 
 
diff --git a/avr/modules/comproto/defs.asm b/avr/modules/comproto/defs.asm
index d4a13f2..7a4708a 100644
--- a/avr/modules/comproto/defs.asm
+++ b/avr/modules/comproto/defs.asm
@@ -26,6 +26,8 @@
 .equ CPRO_CMD_TWIBUSMEMBER           = 30
 .equ CPRO_CMD_DEBUG                  = 40
 
+.equ CPRO_CMD_RESULT                 = 50
+
 .equ CPRO_CMD_NEED_ADDRESS           = 60
 .equ CPRO_CMD_HAVE_ADDRESS           = 61
 .equ CPRO_CMD_CLAIM_ADDRESS          = 62