diff --git a/src/Misc.hs b/src/Misc.hs
index 1aa0699..c514ae9 100644
--- a/src/Misc.hs
+++ b/src/Misc.hs
@@ -1,9 +1,12 @@
+{-# LANGUAGE CPP #-}
 module Misc where
 
 import Test.QuickCheck
 import Data.Map
 import Data.Monoid
 
+#if ! MIN_VERSION_QuickCheck(2,9,0)
+
 instance Arbitrary a => Arbitrary (Last a) where
        arbitrary = do
            ga <- arbitrary
@@ -43,3 +46,5 @@ instance (Arbitrary a, Arbitrary b, Arbitrary c, Arbitrary d, Arbitrary e, Arbit
      x6 <- arbitrary
      x7 <- arbitrary
      return (x1,x2,x3,x4,x5,x6,x7)
+
+#endif