diff --git a/bitcoin-script.cabal b/bitcoin-script.cabal
--- a/bitcoin-script.cabal
+++ b/bitcoin-script.cabal
@@ -1,6 +1,6 @@
 name: bitcoin-script
 category: Network, Finance
-version: 0.11.0
+version: 0.11.1
 license: MIT
 license-file: LICENSE
 copyright: (c) 2015 Leon Mergen
diff --git a/src/Data/Bitcoin/Script/Types.hs b/src/Data/Bitcoin/Script/Types.hs
--- a/src/Data/Bitcoin/Script/Types.hs
+++ b/src/Data/Bitcoin/Script/Types.hs
@@ -38,7 +38,7 @@
 data Script =
     Script {
              -- | List of script operators defining this script
-             scriptOps :: ![ScriptOp]
+             scriptOps :: [ScriptOp]
            }
     deriving (Eq, Show, Read)
 
@@ -73,7 +73,7 @@
 -- | Data type representing all of the operators allowed inside a 'Script'.
 data ScriptOp
       -- Pushing Data
-    = OP_PUSHDATA !BS.ByteString !PushDataType
+    = OP_PUSHDATA BS.ByteString PushDataType
     | OP_0
     | OP_1NEGATE
     | OP_RESERVED
@@ -181,7 +181,7 @@
       -- Other
     | OP_PUBKEYHASH
     | OP_PUBKEY
-    | OP_INVALIDOPCODE !Word8
+    | OP_INVALIDOPCODE Word8
 
         deriving (Show, Read, Eq)
 
diff --git a/test/Data/Bitcoin/ScriptSpec.hs b/test/Data/Bitcoin/ScriptSpec.hs
--- a/test/Data/Bitcoin/ScriptSpec.hs
+++ b/test/Data/Bitcoin/ScriptSpec.hs
@@ -1,7 +1,10 @@
+{-# LANGUAGE TemplateHaskell   #-}
+
 module Data.Bitcoin.ScriptSpec where
 
 import           Data.Bitcoin.Script
 
+import qualified Data.ByteString.Char8      as BS8 (pack)
 import qualified Data.ByteString.Lazy.Char8 as BSL8 (pack)
 
 import           Test.Hspec
@@ -14,10 +17,16 @@
 
       (encode . decode) hex `shouldBe` hex
 
-    it "succesfully parses a transaction into a meaningful object" $ do
+    it "succesfully parses a script into a meaningful object" $ do
       let hex     = BSL8.pack "76a914975efcba1e058667594dc57146022ec46560a63c88ac"
           decoded = decode hex
 
       case decoded of
        (Script [OP_DUP, OP_HASH160, OP_PUSHDATA _ OPCODE, OP_EQUALVERIFY, OP_CHECKSIG]) -> return ()
        _                 -> expectationFailure ("Result does not match expected: " ++ show decoded)
+
+    it "succesfully parses an OP_RETURN script into a meaningful object" $ do
+      let hex     = BSL8.pack "6a0b68656c6c6f20776f726c64"
+          decoded = decode hex
+
+      decoded `shouldBe` (Script [OP_RETURN, OP_PUSHDATA (BS8.pack "hello world") OPCODE])