diff --git a/protocol.md b/protocol.md
index fd51f3e..2949f3a 100644
--- a/protocol.md
+++ b/protocol.md
@@ -73,7 +73,7 @@ Two wire UART 115200 8n1
 | 01   | ofs  | [0] - len  |  +  | +   | +   | Xiaomi | 01 ofs data[len] | Read register(s). ofs is in 16-bit words|
 | 01   | ofs  | [0] - len  |  +  | +   | +   | Ninebot | 04 ofs data[len] | Read register(s). ofs is in 16-bit words|
 | 02   | ofs  | data[]     | -   | +   | +   | Xiaomi | 02 ofs bResult | Write register(s) |
-| 02   | ofs  | data[]     | -   | +   | +   | Ninebot | 05 ofs bResult | Write register(s) |
+| 02   | ofs  | data[]     | -   | +   | +   | Ninebot | 05 bResult - | Write register(s) |
 | 03   | ofs  | data[]     | -   | +   | +   | All | None | Write register(s) w/o response |
 | 05   | ofs_l| [0] ofs_h, [1] len| - | + | - | All | 05 ofs_l {ofs_h,data} | Read registers extended |
 | 07 | any | dUpdateSize | - | + | + | Xiaomi | 07 bResult - | Start firmware update |