diff --git a/benchmarks/haskell/Benchmarks.hs b/benchmarks/haskell/Benchmarks.hs
index 55707964..eb398062 100644
--- a/benchmarks/haskell/Benchmarks.hs
+++ b/benchmarks/haskell/Benchmarks.hs
@@ -39,25 +39,31 @@ main = do
     defaultMain
         [ Builder.benchmark
         , Concat.benchmark
-        , env (DecodeUtf8.initEnv (tf "libya-chinese.html")) (DecodeUtf8.benchmark "html")
-        , env (DecodeUtf8.initEnv (tf "yiwiki.xml")) (DecodeUtf8.benchmark "xml")
-        , env (DecodeUtf8.initEnv (tf "ascii.txt")) (DecodeUtf8.benchmark "ascii")
-        , env (DecodeUtf8.initEnv (tf "russian.txt")) (DecodeUtf8.benchmark  "russian")
-        , env (DecodeUtf8.initEnv (tf "japanese.txt")) (DecodeUtf8.benchmark "japanese")
-        , env (DecodeUtf8.initEnv (tf "ascii.txt")) (DecodeUtf8.benchmarkASCII)
-        , EncodeUtf8.benchmark "non-ASCII" "επανάληψη 竺法蘭共譯"
-        , EncodeUtf8.benchmark "ASCII" "lorem ipsum"
+        , bgroup "DecodeUtf8"
+            [ env (DecodeUtf8.initEnv (tf "libya-chinese.html")) (DecodeUtf8.benchmark "html")
+            , env (DecodeUtf8.initEnv (tf "yiwiki.xml")) (DecodeUtf8.benchmark "xml")
+            , env (DecodeUtf8.initEnv (tf "ascii.txt")) (DecodeUtf8.benchmark "ascii")
+            , env (DecodeUtf8.initEnv (tf "russian.txt")) (DecodeUtf8.benchmark  "russian")
+            , env (DecodeUtf8.initEnv (tf "japanese.txt")) (DecodeUtf8.benchmark "japanese")
+            , env (DecodeUtf8.initEnv (tf "ascii.txt")) (DecodeUtf8.benchmarkASCII)
+            ]
+        , bgroup "EncodeUtf8"
+            [ EncodeUtf8.benchmark "non-ASCII" "επανάληψη 竺法蘭共譯"
+            , EncodeUtf8.benchmark "ASCII" "lorem ipsum"
+            ]
         , env (Equality.initEnv (tf "japanese.txt")) Equality.benchmark
         , FileRead.benchmark (tf "russian.txt")
         , FoldLines.benchmark (tf "russian.txt")
         , env Mul.initEnv Mul.benchmark
         , Multilang.benchmark
-        , env (Pure.initEnv (tf "tiny.txt")) (Pure.benchmark "tiny")
-        , env (Pure.initEnv (tf "ascii-small.txt")) (Pure.benchmark "ascii-small")
-        , env (Pure.initEnv (tf "ascii.txt")) (Pure.benchmark "ascii")
-        , env (Pure.initEnv (tf "english.txt")) (Pure.benchmark "english")
-        , env (Pure.initEnv (tf "russian-small.txt")) (Pure.benchmark "russian")
-        , env (Pure.initEnv (tf "japanese.txt")) (Pure.benchmark "japanese")
+        , bgroup "Pure"
+            [ env (Pure.initEnv (tf "tiny.txt")) (Pure.benchmark "tiny")
+            , env (Pure.initEnv (tf "ascii-small.txt")) (Pure.benchmark "ascii-small")
+            , env (Pure.initEnv (tf "ascii.txt")) (Pure.benchmark "ascii")
+            , env (Pure.initEnv (tf "english.txt")) (Pure.benchmark "english")
+            , env (Pure.initEnv (tf "russian-small.txt")) (Pure.benchmark "russian")
+            , env (Pure.initEnv (tf "japanese.txt")) (Pure.benchmark "japanese")
+            ]
         , env (ReadNumbers.initEnv (tf "numbers.txt")) ReadNumbers.benchmark
         , env (Replace.initEnv (tf "russian.txt")) (Replace.benchmark "принимая" "своем")
         , env (Search.initEnv (tf "russian.txt")) (Search.benchmark "принимая")
diff --git a/benchmarks/haskell/Benchmarks/DecodeUtf8.hs b/benchmarks/haskell/Benchmarks/DecodeUtf8.hs
index 0558d3b4..e9e18eb8 100644
--- a/benchmarks/haskell/Benchmarks/DecodeUtf8.hs
+++ b/benchmarks/haskell/Benchmarks/DecodeUtf8.hs
@@ -22,8 +22,7 @@ module Benchmarks.DecodeUtf8
     ) where
 
 import Data.ByteString.Lazy.Internal (ByteString(..))
-import qualified Test.Tasty.Bench as C
-import Test.Tasty.Bench (Benchmark, bgroup, nf)
+import Test.Tasty.Bench
 import qualified Data.ByteString as B
 import qualified Data.ByteString.Lazy as BL
 import qualified Data.Text as T
@@ -41,14 +40,13 @@ initEnv fp = do
 
 benchmark :: String -> Env -> Benchmark
 benchmark kind ~(bs, lbs) =
-    let bench name = C.bench (name ++ "+" ++ kind)
-        decodeStream (Chunk b0 bs0) = case T.streamDecodeUtf8 b0 of
+    let decodeStream (Chunk b0 bs0) = case T.streamDecodeUtf8 b0 of
                                         T.Some t0 _ f0 -> t0 : go f0 bs0
           where go f (Chunk b bs1) = case f b of
                                        T.Some t1 _ f1 -> t1 : go f1 bs1
                 go _ _ = []
         decodeStream _ = []
-    in bgroup "DecodeUtf8"
+    in bgroup kind
         [ bench "Strict" $ nf T.decodeUtf8 bs
         , bench "Stream" $ nf decodeStream lbs
         , bench "StrictLength" $ nf (T.length . T.decodeUtf8) bs
@@ -60,11 +58,11 @@ benchmark kind ~(bs, lbs) =
 
 benchmarkASCII :: Env -> Benchmark
 benchmarkASCII ~(bs, lbs) =
-    bgroup "DecodeASCII"
-        [ C.bench "strict decodeUtf8" $ nf T.decodeUtf8 bs
-        , C.bench "strict decodeLatin1" $ nf T.decodeLatin1 bs
-        , C.bench "strict decodeASCII" $ nf T.decodeASCII bs
-        , C.bench "lazy decodeUtf8" $ nf TL.decodeUtf8 lbs
-        , C.bench "lazy decodeLatin1" $ nf TL.decodeLatin1 lbs
-        , C.bench "lazy decodeASCII" $ nf TL.decodeASCII lbs
+    bgroup "ascii"
+        [ bench "strict decodeUtf8" $ nf T.decodeUtf8 bs
+        , bench "strict decodeLatin1" $ nf T.decodeLatin1 bs
+        , bench "strict decodeASCII" $ nf T.decodeASCII bs
+        , bench "lazy decodeUtf8" $ nf TL.decodeUtf8 lbs
+        , bench "lazy decodeLatin1" $ nf TL.decodeLatin1 lbs
+        , bench "lazy decodeASCII" $ nf TL.decodeASCII lbs
         ]
diff --git a/benchmarks/haskell/Benchmarks/EncodeUtf8.hs b/benchmarks/haskell/Benchmarks/EncodeUtf8.hs
index ff9a4d8e..5dd09ca0 100644
--- a/benchmarks/haskell/Benchmarks/EncodeUtf8.hs
+++ b/benchmarks/haskell/Benchmarks/EncodeUtf8.hs
@@ -20,9 +20,9 @@ import qualified Data.Text.Lazy.Encoding as TL
 
 benchmark :: String -> String -> Benchmark
 benchmark name string =
-    bgroup "EncodeUtf8"
-        [ bench ("Text (" ++ name ++ ")")     $ whnf (B.length . T.encodeUtf8)   text
-        , bench ("LazyText (" ++ name ++ ")") $ whnf (BL.length . TL.encodeUtf8) lazyText
+    bgroup name
+        [ bench "Text"     $ whnf (B.length . T.encodeUtf8)   text
+        , bench "LazyText" $ whnf (BL.length . TL.encodeUtf8) lazyText
         ]
   where
     -- The string in different formats
diff --git a/benchmarks/haskell/Benchmarks/Pure.hs b/benchmarks/haskell/Benchmarks/Pure.hs
index 39e2439c..a4dc4fbb 100644
--- a/benchmarks/haskell/Benchmarks/Pure.hs
+++ b/benchmarks/haskell/Benchmarks/Pure.hs
@@ -74,7 +74,7 @@ initEnv fp = do
 
 benchmark :: String -> Env -> Benchmark
 benchmark kind ~Env{..} =
-    bgroup "Pure"
+    bgroup kind
         [ bgroup "append"
             [ benchT   $ nf (T.append tb) ta
             , benchTL  $ nf (TL.append tlb) tla
@@ -279,17 +279,17 @@ benchmark kind ~Env{..} =
                 ]
               ]
         , bgroup "Builder"
-            [ bench ("mappend char+" ++ kind) $
+            [ bench "mappend char" $
                 nf (TL.length . TB.toLazyText . mappendNChar 'a') 10000
-            , bench ("mappend 8 char+" ++ kind) $
+            , bench "mappend 8 char" $
                 nf (TL.length . TB.toLazyText . mappend8Char) 'a'
-            , bench ("mappend text+" ++ kind) $
+            , bench "mappend text" $
                 nf (TL.length . TB.toLazyText . mappendNText short) 10000
             ]
         ]
   where
-    benchT   = bench ("Text+" ++ kind)
-    benchTL  = bench ("LazyText+" ++ kind)
+    benchT   = bench "Text"
+    benchTL  = bench "LazyText"
 
     c  = 'й'
     p0 = (== c)