diff --git a/System/Locale.hs b/System/Locale.hs
--- a/System/Locale.hs
+++ b/System/Locale.hs
@@ -10,7 +10,8 @@
 --
 -- This module provides the ability to adapt to local conventions.
 -- At present, it supports only time and date information as used by
--- 'System.Time.calendarTimeToString' from the "System.Time" module.
+-- System.Time.calendarTimeToString from the System.Time module in the
+-- old-time package.
 --
 -----------------------------------------------------------------------------
 
@@ -75,8 +76,8 @@
 -- but we can add a time spec.
 
 iso8601DateFormat :: Maybe String -> String
-iso8601DateFormat timeFmt =
-    "%Y-%m-%d" ++ case timeFmt of
+iso8601DateFormat mTimeFmt =
+    "%Y-%m-%d" ++ case mTimeFmt of
              Nothing  -> "" 
              Just fmt -> ' ' : fmt
 
diff --git a/old-locale.cabal b/old-locale.cabal
--- a/old-locale.cabal
+++ b/old-locale.cabal
@@ -1,9 +1,10 @@
 name:		old-locale
-version:	1.0.0.0
+version:	1.0.0.1
 license:	BSD3
 license-file:	LICENSE
 maintainer:	libraries@haskell.org
 synopsis:	locale library
+category:       System
 description:
     This package provides the old locale library.
     For new code, the new locale library is recommended.