diff --git a/Data/Text/Lazy/Encoding.hs b/Data/Text/Lazy/Encoding.hs
--- a/Data/Text/Lazy/Encoding.hs
+++ b/Data/Text/Lazy/Encoding.hs
@@ -62,7 +62,7 @@
 import qualified Data.ByteString.Unsafe as B
 #if MIN_VERSION_bytestring(0,10,4)
 import Data.Word (Word8)
-import Data.Monoid (mempty, (<>))
+import Data.Monoid (mappend, mempty)
 import qualified Data.ByteString.Builder as B
 import qualified Data.ByteString.Builder.Extra as B (safeStrategy, toLazyByteStringWith)
 import qualified Data.ByteString.Builder.Prim as BP
@@ -161,12 +161,13 @@
     strategy        = B.safeStrategy firstChunkSize B.defaultChunkSize
 
 encodeUtf8Builder :: Text -> B.Builder
-encodeUtf8Builder = foldrChunks (\c b -> TE.encodeUtf8Builder c <> b) mempty
+encodeUtf8Builder =
+    foldrChunks (\c b -> TE.encodeUtf8Builder c `mappend` b) mempty
 
 {-# INLINE encodeUtf8BuilderEscaped #-}
 encodeUtf8BuilderEscaped :: BP.BoundedPrim Word8 -> Text -> B.Builder
 encodeUtf8BuilderEscaped prim =
-    foldrChunks (\c b -> TE.encodeUtf8BuilderEscaped prim c <> b) mempty
+    foldrChunks (\c b -> TE.encodeUtf8BuilderEscaped prim c `mappend` b) mempty
 
 #else
 encodeUtf8 (Chunk c cs) = B.Chunk (TE.encodeUtf8 c) (encodeUtf8 cs)
diff --git a/tests/Tests/Properties.hs b/tests/Tests/Properties.hs
--- a/tests/Tests/Properties.hs
+++ b/tests/Tests/Properties.hs
@@ -1,9 +1,8 @@
--- | General quicktest properties for the text library
---
+-- | QuickCheck properties for the text library.
+
 {-# LANGUAGE BangPatterns, FlexibleInstances, OverloadedStrings,
              ScopedTypeVariables, TypeSynonymInstances #-}
-{-# OPTIONS_GHC -fno-enable-rewrite-rules #-}
-{-# OPTIONS_GHC -fno-warn-missing-signatures #-}
+{-# OPTIONS_GHC -fno-enable-rewrite-rules -fno-warn-missing-signatures #-}
 module Tests.Properties
     (
       tests
@@ -784,7 +783,8 @@
 showFloat TB.Fixed    = showFFloat
 showFloat TB.Generic  = showGFloat
 
-tb_formatRealFloat :: (RealFloat a, Show a) => a -> TB.FPFormat -> Precision a -> Property
+tb_formatRealFloat :: (RealFloat a, Show a) =>
+                      a -> TB.FPFormat -> Precision a -> Property
 tb_formatRealFloat a fmt prec =
     TB.formatRealFloat fmt p a ===
     TB.fromString (showFloat fmt p a "")
diff --git a/tests/Tests/QuickCheckUtils.hs b/tests/Tests/QuickCheckUtils.hs
--- a/tests/Tests/QuickCheckUtils.hs
+++ b/tests/Tests/QuickCheckUtils.hs
@@ -12,9 +12,9 @@
 
     , BigBounded(..)
     , BigInt(..)
-    , NotEmpty (..)
+    , NotEmpty(..)
 
-    , Small (..)
+    , Small(..)
     , small
 
     , Precision(..)
@@ -22,14 +22,14 @@
 
     , integralRandomR
 
-    , DecodeErr (..)
+    , DecodeErr(..)
     , genDecodeErr
 
-    , Stringy (..)
+    , Stringy(..)
     , eq
     , eqP
 
-    , Encoding (..)
+    , Encoding(..)
 
     , write_read
     ) where
@@ -43,7 +43,7 @@
 import Data.Text.Lazy.Builder.RealFloat (FPFormat(..))
 import Data.Word (Word8, Word16)
 import Debug.Trace (trace)
-import System.Random (Random (..), RandomGen)
+import System.Random (Random(..), RandomGen)
 import Test.QuickCheck hiding (Fixed(..), Small (..), (.&.))
 import Test.QuickCheck.Monadic (assert, monadicIO, run)
 import Test.QuickCheck.Unicode (string)
diff --git a/text.cabal b/text.cabal
--- a/text.cabal
+++ b/text.cabal
@@ -1,5 +1,5 @@
 name:           text
-version:        1.2.0.3
+version:        1.2.0.4
 homepage:       https://github.com/bos/text
 bug-reports:    https://github.com/bos/text/issues
 synopsis:       An efficient packed Unicode text type.
@@ -71,7 +71,6 @@
 
 flag integer-simple
   description: Use the simple integer library instead of GMP
-  default: False
 
 library
   c-sources:    cbits/cbits.c