diff --git a/FlexibleManipulate.hs b/FlexibleManipulate.hs
index 48f9cc78..41fdabe5 100644
--- a/FlexibleManipulate.hs
+++ b/FlexibleManipulate.hs
@@ -1,3 +1,4 @@
+{-# OPTIONS_GHC -fglasgow-exts #-}
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  XMonadContrib.FlexibleManipulate