#6819: fix typo.
diff --git a/Doc/reference/datamodel.rst b/Doc/reference/datamodel.rst
index ef2f382..e3abeb7 100644
--- a/Doc/reference/datamodel.rst
+++ b/Doc/reference/datamodel.rst
@@ -666,7 +666,7 @@
of the shared library file.
Custom classes
- Custon class types are typically created by class definitions (see section
+ Custom class types are typically created by class definitions (see section
:ref:`class`). A class has a namespace implemented by a dictionary object.
Class attribute references are translated to lookups in this dictionary, e.g.,
``C.x`` is translated to ``C.__dict__["x"]`` (although there are a number of