diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index c76a721565a..10d48884b2e 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,7 @@
+2014-12-02  Glenn Morris  <rgm@gnu.org>
+
+	* whitespace.el (whitespace-big-indent-regexp): Add :version.
+
 2014-12-02  Eric S. Raymond  <esr@snark.thyrsus.com>
 
 	* subr.el (filter): New macro. Because it's just silly for a Lisp
diff --git a/lisp/whitespace.el b/lisp/whitespace.el
index 4edeff99ce5..e4577d848c5 100644
--- a/lisp/whitespace.el
+++ b/lisp/whitespace.el
@@ -866,6 +866,7 @@ NOTE: Enclose always by \\\\( and \\\\) the elements to highlight.
       Use exactly one pair of enclosing \\\\( and \\\\).
 
 Used when `whitespace-style' includes `big-indent'."
+  :version "25.1"
   :type '(regexp :tag "Detect too much indentation at the beginning of a line")
   :group 'whitespace)