diff --git a/language-elm.cabal b/language-elm.cabal
--- a/language-elm.cabal
+++ b/language-elm.cabal
@@ -1,5 +1,5 @@
 name:               language-elm
-version:            0.1.0.2
+version:            0.1.0.3
 synopsis:           Generate elm code
 description:        Generate elm code from an ast
 homepage:           https://github.com/eliaslfox/language-elm#readme
@@ -20,7 +20,7 @@
                        pretty >= 1.1.3 && < 1.2,
                        MissingH >= 1.4.0 && < 1.5,
                        mtl >= 2.2.1 && < 2.3,
-                       protolude >= 0.2 && < 0.3
+                       protolude >= 0.1.1 && < 0.2
   default-language: Haskell2010
 
 test-suite language-elm-test
@@ -33,7 +33,7 @@
                      , pretty >= 1.1.3 && < 1.2
                      , hspec >= 2.4.3 && < 2.5
                      , mtl >= 2.2.1 && < 2.3
-                     , protolude >= 0.2 && < 0.3
+                     , protolude >= 0.1.1 && < 0.2
   ghc-options:      -threaded -rtsopts -with-rtsopts=-N
   default-language: Haskell2010
 
diff --git a/src/Elm.hs b/src/Elm.hs
--- a/src/Elm.hs
+++ b/src/Elm.hs
@@ -1,5 +1,5 @@
 {-# OPTIONS_HADDOCK prune #-}
-{-# OPTIONS_GHC -Wall -Werror #-}
+{-# OPTIONS_GHC -Wall #-}
 {-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE Trustworthy       #-}
 module Elm
@@ -56,8 +56,7 @@
 
 -- Please note that doctest is very specefic about spacing
 -- so chaning spacing in the examples may break tests
-import           Prelude              (error)
-import           Protolude            hiding (bool, list)
+import           Protolude            hiding (Type, bool, list)
 
 import           Control.Monad.Writer
 import           Data.String
diff --git a/src/Elm/Expression.hs b/src/Elm/Expression.hs
--- a/src/Elm/Expression.hs
+++ b/src/Elm/Expression.hs
@@ -13,6 +13,7 @@
 
 import           Control.Monad        (mapM, when)
 import           Control.Monad.Writer (tell)
+import           Data.List            hiding (map)
 import           Data.String          (IsString (..), String)
 import           Elm.Classes          (Generate (..))
 import           Elm.GenError         (GenError (..))