4 files changed, 6 insertions, 6 deletions

diff --git a/src/Data/Torrent/Block.hs b/src/Data/Torrent/Block.hs
index 37889a7a..fd12b7a0 100644
--- a/src/Data/Torrent/Block.hs
+++ b/src/Data/Torrent/Block.hs
@@ -97,7 +97,7 @@ data BlockIx = BlockIx {
   , ixLength :: {-# UNPACK #-} !BlockSize
   } deriving (Show, Eq)
 
-$(deriveJSON (L.map toLower . L.dropWhile isLower) ''BlockIx)
+$(deriveJSON defaultOptions { fieldLabelModifier = (L.map toLower . L.dropWhile isLower) } ''BlockIx)
 
 getInt :: S.Get Int
 getInt = fromIntegral <$> S.getWord32be
diff --git a/src/Data/Torrent/Layout.hs b/src/Data/Torrent/Layout.hs
index 8f35772d..d39c6c04 100644
--- a/src/Data/Torrent/Layout.hs
+++ b/src/Data/Torrent/Layout.hs
@@ -125,7 +125,7 @@ data FileInfo a = FileInfo {
                , Functor, Foldable
                )
 
-$(deriveJSON (L.map Char.toLower . L.dropWhile isLower) ''FileInfo)
+$(deriveJSON defaultOptions { fieldLabelModifier =  (L.map Char.toLower . L.dropWhile isLower) } ''FileInfo)
 
 makeLensesFor
   [ ("fiLength", "fileLength")
@@ -210,7 +210,7 @@ data LayoutInfo
     , liDirName  :: !ByteString
     } deriving (Show, Read, Eq, Typeable)
 
-$(deriveJSON (L.map Char.toLower . L.dropWhile isLower) ''LayoutInfo)
+$(deriveJSON defaultOptions { fieldLabelModifier =  (L.map Char.toLower . L.dropWhile isLower) } ''LayoutInfo)
 
 makeLensesFor
   [ ("liFile"   , "singleFile" )
diff --git a/src/Data/Torrent/Piece.hs b/src/Data/Torrent/Piece.hs
index 7eb4e3d5..f7c6257b 100644
--- a/src/Data/Torrent/Piece.hs
+++ b/src/Data/Torrent/Piece.hs
@@ -117,7 +117,7 @@ data Piece a = Piece
   , pieceData  :: !a
   } deriving (Show, Read, Eq, Typeable)
 
-$(deriveJSON (L.map toLower . L.dropWhile isLower) ''Piece)
+$(deriveJSON defaultOptions { fieldLabelModifier =  (L.map toLower . L.dropWhile isLower) } ''Piece)
 
 instance NFData (Piece a)
 
@@ -160,7 +160,7 @@ data PieceInfo = PieceInfo
     -- ^ Concatenation of all 20-byte SHA1 hash values.
   } deriving (Show, Read, Eq, Typeable)
 
-$(deriveJSON (L.map toLower . L.dropWhile isLower) ''PieceInfo)
+$(deriveJSON defaultOptions { fieldLabelModifier =  (L.map toLower . L.dropWhile isLower) } ''PieceInfo)
 
 -- | Number of bytes in each piece.
 makeLensesFor [("piPieceLength", "pieceLength")] ''PieceInfo
diff --git a/src/Data/Torrent/Progress.hs b/src/Data/Torrent/Progress.hs
index 1a4a68e2..34f8f299 100644
--- a/src/Data/Torrent/Progress.hs
+++ b/src/Data/Torrent/Progress.hs
@@ -62,7 +62,7 @@ data Progress = Progress
   } deriving (Show, Read, Eq)
 
 $(makeLenses ''Progress)
-$(deriveJSON L.tail ''Progress)
+$(deriveJSON defaultOptions { fieldLabelModifier = L.tail } ''Progress)
 
 -- | UDP tracker compatible encoding.
 instance Serialize Progress where