diff --git a/bench/Main.hs b/bench/Main.hs
index 38ef6c8..30b76e0 100644
--- a/bench/Main.hs
+++ b/bench/Main.hs
@@ -20,15 +20,23 @@ import           Control.Foldl.Statistics
 -- Test sample
 {-# NOINLINE sample #-}
 sample :: U.Vector Double
+#if MIN_VERSION_mwc_random(0,15,0)
 sample = runST $ do
   g <-  create
   U.replicateM 10000 (uniformRM (-10.0,10.0) g)
+#else
+sample = runST $ flip uniformVector 10000 =<< create
+#endif
 
 {-# NOINLINE sample2 #-}
 sample2 :: U.Vector (Double,Double)
+#if MIN_VERSION_mwc_random(0,15,0)
 sample2 = runST $  do
   g <-  create
   U.replicateM 10000 (liftA2 (,) (uniformRM (-10.0,10.0) g) (uniformRM (0.2,5.0) g))
+#else
+sample2 = runST $ flip uniformVector 10000 =<< create
+#endif
 
 {-# NOINLINE absSample #-}
 absSample :: U.Vector Double