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-rw-r--r--XMonad/Layout/Groups/Helpers.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/XMonad/Layout/Groups/Helpers.hs b/XMonad/Layout/Groups/Helpers.hs
index 268ab72..4bafdd3 100644
--- a/XMonad/Layout/Groups/Helpers.hs
+++ b/XMonad/Layout/Groups/Helpers.hs
@@ -1,5 +1,5 @@
{-# OPTIONS_GHC -fno-warn-missing-signatures #-}
-{-# LANGUAGE MultiParamTypeClasses, Rank2Types #-}
+{-# LANGUAGE MultiParamTypeClasses, Rank2Types, ImpredicativeTypes #-}
-----------------------------------------------------------------------------
-- |