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-rw-r--r--compiler/utils/Outputable.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/utils/Outputable.hs b/compiler/utils/Outputable.hs
index be5930e7ba..4107e5beef 100644
--- a/compiler/utils/Outputable.hs
+++ b/compiler/utils/Outputable.hs
@@ -1,4 +1,4 @@
-{-# LANGUAGE CPP #-}
+{-# LANGUAGE CPP, ImplicitParams #-}
{-
(c) The University of Glasgow 2006-2012
(c) The GRASP Project, Glasgow University, 1992-1998