diff --git a/docs/ref/databases.txt b/docs/ref/databases.txt
index dde56a3..3279f35 100644
--- a/docs/ref/databases.txt
+++ b/docs/ref/databases.txt
@@ -520,7 +520,8 @@ DateTime fields
 MySQL does not have a timezone-aware column type. If an attempt is made to
 store a timezone-aware ``time`` or ``datetime`` to a
 :class:`~django.db.models.TimeField` or :class:`~django.db.models.DateTimeField`
-respectively, a ``ValueError`` is raised rather than truncating data.
+respectively and :setting:`USE_TZ=False <USE_TZ>`, a ``ValueError`` is raised
+rather than truncating data.
 
 MySQL does not store fractions of seconds. Fractions of seconds are truncated
 to zero when the time is stored.