Index: docs/ref/validators.txt
===================================================================
--- docs/ref/validators.txt	(revision 13136)
+++ docs/ref/validators.txt	(working copy)
@@ -59,20 +59,22 @@
 ``RegexValidator``
 ------------------
 
-.. class:: RegexValidator(regex=None, message=None, code=None)
+.. class:: RegexValidator(regex, message=None, code=None)
 
-.. attribute:: regex=None
+.. attribute:: regex
 
-The regular expression to search for the provided ``value``. Raises a
-``ValidationError`` if no match was found.
+The regular expression pattern to search for the provided ``value``. Raises a
+``ValidationError`` with ``message`` and ``code`` if no match is found.
 
-.. attribute:: code='invalid'
+.. attribute:: message=None
 
-The error code to use if validation fails. Defaults to ``'invalid'``.
+The error message used by ``ValidationError`` if validation fails. If no
+``message`` is specified, a generic ``"Enter a valid value"`` message is used.
 
-.. attribute:: message=None
+.. attribute:: code=None
 
-The error message to use if ``regex`` doesn't match the provided ``value``.
+The error code used by ``ValidationError`` if validation fails. If ``code``
+is not specified, ``"invalid"`` is used.
 
 ``URLValidator``
 ----------------