diff --git a/Cabal/doc/installing-packages.rst b/Cabal/doc/installing-packages.rst
index b9e92cf3041440c250a5a5a9fe111a43ae592908..22c4cc4135ff8f692a581eb7f75c9d694d857df2 100644
--- a/Cabal/doc/installing-packages.rst
+++ b/Cabal/doc/installing-packages.rst
@@ -52,7 +52,7 @@ Various environment variables affect ``cabal-install``.
 ``CABAL_DIR``
    Default content directory for ``cabal-install`` files.
    Default value is ``getAppUserDataDirectory "cabal"``, which is
-   ``$HOME/.cabal`` on unix systems. 
+   ``$HOME/.cabal`` on unix systems and ``%APPDATA%\cabal`` in Windows.
 
    .. note::