diff --git a/protocol.md b/protocol.md
index 9a0a31d..a44e0de 100644
--- a/protocol.md
+++ b/protocol.md
@@ -97,7 +97,7 @@ Two wire UART 115200 8n1
 | 58 | any | dAuth0, dAuth1, wUnused | - | + | - | All | - | Factory reset (total) |
 | 59 | ? | ? | - | + | - | All | ? | ? |
 | 5A | 'N' | 'S' | - | + | - | All | - | User reset (pin and settings) |
-| 5C | any | dAuth, dValue, wUnused | - | + | - | All | - | write regs 29-30 |
+| 5C | any | dAuth, dOdometer, wUnused | - | + | - | All | - | Set odometer |
 | 61 | ofs | bReadLen, bHeadDataLen, bHeadData[bHeadDataLen] | - | + | - | All | 01 ofs data[] | Read regs, update head inputs |
 | 64 | any | bDataLen, bThrottle, bBrake, wUnkn [, wBLEFwVersion] | - | + | - | All | ? | Update head inputs |
 | 64 | any | bDataLen, bFlags, bBattLevelBars, bHeadlightLevel, bBeeps | + | - | - | M365 | ? | Update head outputs |