diff --git a/Liquid.hs b/Liquid.hs
index d7c059c43a..24e0701392 100644
--- a/Liquid.hs
+++ b/Liquid.hs
@@ -1,10 +1,14 @@
 {-# LANGUAGE TupleSections  #-}
+{-# LANGUAGE CPP #-}
 
 {-@ LIQUID "--cabaldir" @-}
 {-@ LIQUID "--diff"     @-}
 
--- import           Data.Monoid      (mconcat, mempty)
--- import           Control.Applicative ((<$>))
+#if __GLASGOW_HASKELL__ < 710
+import           Data.Monoid      (mconcat, mempty)
+import           Control.Applicative ((<$>))
+#endif
+
 import           Data.Maybe
 import           System.Exit
 import           Control.DeepSeq