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-rw-r--r--libraries/base/System/IO.hs3
1 files changed, 2 insertions, 1 deletions
diff --git a/libraries/base/System/IO.hs b/libraries/base/System/IO.hs
index d52c2c9d06..f60ecadeee 100644
--- a/libraries/base/System/IO.hs
+++ b/libraries/base/System/IO.hs
@@ -1,4 +1,5 @@
-{-# OPTIONS_GHC -XNoImplicitPrelude #-}
+{-# LANGUAGE CPP, NoImplicitPrelude #-}
+
-----------------------------------------------------------------------------
-- |
-- Module : System.IO