diff --git a/Data/ByteString/Nums/Careless/Hex.hs b/Data/ByteString/Nums/Careless/Hex.hs
--- a/Data/ByteString/Nums/Careless/Hex.hs
+++ b/Data/ByteString/Nums/Careless/Hex.hs
@@ -113,16 +113,8 @@
   between b a z              =  b >= c2w a && byte <= c2w z
   place_up b                 =  (0x10 * acc) + fromIntegral b
 
-strict_hex bytes             =  foldl' hexalize 0 piece
- where
-  piece                      =  if pack "0x" `isPrefixOf` bytes
-                                  then  drop 2 bytes
-                                  else  bytes
+strict_hex bytes             =  foldl' hexalize 0 bytes
 
-lazy_hex bytes               =  Lazy.foldlChunks (foldl' hexalize) 0 piece
- where
-  piece                      =  if Lazy.pack "0x" `Lazy.isPrefixOf` bytes
-                                  then  Lazy.drop 2 bytes
-                                  else  bytes
+lazy_hex bytes               =  Lazy.foldlChunks (foldl' hexalize) 0 bytes
 
 
diff --git a/Data/ByteString/Nums/Careless/Int.hs b/Data/ByteString/Nums/Careless/Int.hs
--- a/Data/ByteString/Nums/Careless/Int.hs
+++ b/Data/ByteString/Nums/Careless/Int.hs
@@ -11,9 +11,9 @@
 import Data.Word
 import Data.Int
 import Data.Ratio
-import Data.ByteString hiding (head)
+import Data.ByteString hiding (head, pack)
 import Data.ByteString.Internal
-import Data.ByteString.Char8 (head)
+import Data.ByteString.Char8 hiding (foldl')
 import qualified Data.ByteString.Lazy.Char8 as Lazy
 import qualified Data.ByteString.Lazy.Internal as Lazy
 
diff --git a/bytestring-nums.cabal b/bytestring-nums.cabal
--- a/bytestring-nums.cabal
+++ b/bytestring-nums.cabal
@@ -1,5 +1,5 @@
 name                          : bytestring-nums
-version                       : 0.1.0
+version                       : 0.2.0
 category                      : Text
 license                       : BSD3
 license-file                  : LICENSE