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-rw-r--r--docs/ref/models/fields.txt3
1 files changed, 2 insertions, 1 deletions
diff --git a/docs/ref/models/fields.txt b/docs/ref/models/fields.txt
index cc89142b4d..6c9dbf5a87 100644
--- a/docs/ref/models/fields.txt
+++ b/docs/ref/models/fields.txt
@@ -805,7 +805,8 @@ this as a ``<select>`` box with "Unknown", "Yes" and "No" choices.
.. class:: PositiveIntegerField([**options])
-Like an :class:`IntegerField`, but must be positive.
+Like an :class:`IntegerField`, but must be either positive or zero (`0`).
+The value `0` is accepted for backward compatibility reasons.
``PositiveSmallIntegerField``
-----------------------------