diff --git a/Livox-SDK-Communication-Protocol.md b/Livox-SDK-Communication-Protocol.md
index 2dbf78b..d0e0819 100644
--- a/Livox-SDK-Communication-Protocol.md
+++ b/Livox-SDK-Communication-Protocol.md
@@ -819,7 +819,7 @@ request
 | ---- | ------- | ------------- | --------- | ------------------------------------------------------------ |
 | data | cmd_set | 0             | uint8_t   | LiDAR Command: 0x01                                          |
 |      | cmd_id  | 1             | uint8_t   | Command ID: 0x0A                                             |
-|      | year   | 2             | uint8_t   | UTC Year:<br>0 is 2000 year <br>255 is 2555 year |
+|      | year   | 2             | uint8_t   | UTC Year:<br>0 is 2000 year <br>255 is 2255 year |
 |      | month  | 3             | uint8_t   | UTC Month: Range is 1-12 |
 |      | day    | 4             | uint8_t   | UTC Day: Range is 1-31 |
 |      | hour   | 5             | uint8_t   | UTC Hour: Range is 0-23|