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diff --git a/Utility/QuickCheck.hs b/Utility/QuickCheck.hs
index cd408dd..9f60f23 100644
--- a/Utility/QuickCheck.hs
+++ b/Utility/QuickCheck.hs
@@ -9,2 +9,3 @@
{-# LANGUAGE TypeSynonymInstances #-}
+{-# LANGUAGE CPP #-}
@@ -23,2 +24,3 @@ import Prelude
+#if ! MIN_VERSION_QuickCheck(2,8,2)
instance (Arbitrary k, Arbitrary v, Eq k, Ord k) => Arbitrary (M.Map k v) where
@@ -28,2 +30,3 @@ instance (Arbitrary v, Eq v, Ord v) => Arbitrary (S.Set v) where
arbitrary = S.fromList <$> arbitrary
+#endif
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