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-rw-r--r--src/Text/Pandoc/Writers/Docbook.hs2
-rw-r--r--src/Text/Pandoc/Writers/FB2.hs2
-rw-r--r--src/Text/Pandoc/Writers/LaTeX.hs3
3 files changed, 5 insertions, 2 deletions
diff --git a/src/Text/Pandoc/Writers/Docbook.hs b/src/Text/Pandoc/Writers/Docbook.hs
index bc4732d7f..367193116 100644
--- a/src/Text/Pandoc/Writers/Docbook.hs
+++ b/src/Text/Pandoc/Writers/Docbook.hs
@@ -1,4 +1,4 @@
-{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE OverloadedStrings, PatternGuards #-}
{-
Copyright (C) 2006-2014 John MacFarlane <jgm@berkeley.edu>
diff --git a/src/Text/Pandoc/Writers/FB2.hs b/src/Text/Pandoc/Writers/FB2.hs
index ddbb976ef..233b8b32b 100644
--- a/src/Text/Pandoc/Writers/FB2.hs
+++ b/src/Text/Pandoc/Writers/FB2.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE PatternGuards #-}
+
{-
Copyright (c) 2011-2012, Sergey Astanin
All rights reserved.
diff --git a/src/Text/Pandoc/Writers/LaTeX.hs b/src/Text/Pandoc/Writers/LaTeX.hs
index 3ea070ee7..d140932a7 100644
--- a/src/Text/Pandoc/Writers/LaTeX.hs
+++ b/src/Text/Pandoc/Writers/LaTeX.hs
@@ -1,4 +1,5 @@
-{-# LANGUAGE OverloadedStrings, ScopedTypeVariables #-}
+{-# LANGUAGE OverloadedStrings, ScopedTypeVariables,
+ PatternGuards #-}
{-
Copyright (C) 2006-2014 John MacFarlane <jgm@berkeley.edu>