diff --git a/XMonad/Layout/WindowArranger.hs b/XMonad/Layout/WindowArranger.hs
index 8eb550ea..d8d89a8f 100644
--- a/XMonad/Layout/WindowArranger.hs
+++ b/XMonad/Layout/WindowArranger.hs
@@ -19,6 +19,7 @@ module XMonad.Layout.WindowArranger
       -- $usage
       windowArranger
     , WindowArrangerMsg (..)
+    , WindowArranger
     , memberFromList
     , listFromList
     , diff