diff --git a/docs/en/reference/types.rst b/docs/en/reference/types.rst
index a0a8de01fcb..abb8644bbc3 100644
--- a/docs/en/reference/types.rst
+++ b/docs/en/reference/types.rst
@@ -581,7 +581,7 @@ Please also notice the mapping specific footnotes for additional information.
     |                   |               +--------------------------+---------+----------------------------------------------------------+
     |                   |               | **SQL Server**           | *all*   | ``VARCHAR(MAX)``                                         |
     +-------------------+---------------+--------------------------+---------+----------------------------------------------------------+
-    | **guid**          | ``string``    | **MySQL**                | *all*   | ``VARCHAR(255)`` [1]                                     |
+    | **guid**          | ``string``    | **MySQL**                | *all*   | ``CHAR(36)`` [1]                                         |
     |                   |               +--------------------------+         |                                                          |
     |                   |               | **Oracle**               |         |                                                          |
     |                   |               +--------------------------+         |                                                          |