diff --git a/doc/interfaces/serial.rst b/doc/interfaces/serial.rst
index 413d9cfd1..59ffef21a 100644
--- a/doc/interfaces/serial.rst
+++ b/doc/interfaces/serial.rst
@@ -98,5 +98,5 @@ Examples of serial frames
 +----------------+---------------------+------+---------------------+--------------+
 | Start of frame | Timestamp           | DLC  | Arbitration ID      | End of frame |
 +================+=====================+======+=====================+==============+
-| 0xAA           | 0x66 0x73 0x00 0x00 | 0x00 | 0x01 0x00 0x00 0x00 | 0xBBS        |
+| 0xAA           | 0x66 0x73 0x00 0x00 | 0x00 | 0x01 0x00 0x00 0x00 | 0xBB         |
 +----------------+---------------------+------+---------------------+--------------+