diff --git a/test/sample5.bz2 b/test/sample5.bz2
new file mode 100644
index 0000000..821e720
Binary files /dev/null and b/test/sample5.bz2 differ
diff --git a/test/sample5.ref b/test/sample5.ref
new file mode 100644
index 0000000..3fa5a6d
Binary files /dev/null and b/test/sample5.ref differ
diff --git a/test/test.hs b/test/test.hs
index 6aa0523..39aa39b 100644
--- a/test/test.hs
+++ b/test/test.hs
@@ -15,7 +15,8 @@ import Prelude as P
 main :: IO ()
 main = hspec $ do
   describe "decompress" $ do
-    forM_ ["sample1", "sample2", "sample3", "sample4"] $ \file -> do
+    forM_ [1..5] $ \n -> do
+      let file = "sample"++show n
       it ("correctly " ++ file ++ ".bz2") $ do
         dec <- runConduitRes
              $ sourceFile ("test/" ++ file ++ ".bz2")