diff --git a/graphql.cabal b/graphql.cabal
index 9054347..f72a913 100644
--- a/graphql.cabal
+++ b/graphql.cabal
@@ -47,7 +47,6 @@ library
       Language.GraphQL.Validate.Validation
       Test.Hspec.GraphQL
   other-modules:
-      Language.GraphQL.Execute.Internal
       Language.GraphQL.Execute.Transform
       Language.GraphQL.Type.Definition
       Language.GraphQL.Type.Internal
diff --git a/src/Language/GraphQL/Execute/Internal.hs b/src/Language/GraphQL/Execute/Internal.hs
deleted file mode 100644
index 046db45..0000000
--- a/src/Language/GraphQL/Execute/Internal.hs
+++ /dev/null
@@ -1,31 +0,0 @@
-{- This Source Code Form is subject to the terms of the Mozilla Public License,
-   v. 2.0. If a copy of the MPL was not distributed with this file, You can
-   obtain one at https://mozilla.org/MPL/2.0/. -}
-
-{-# LANGUAGE DuplicateRecordFields #-}
-{-# LANGUAGE ExplicitForAll #-}
-{-# LANGUAGE NamedFieldPuns #-}
-
-module Language.GraphQL.Execute.Internal
-    ( addError
-    , singleError
-    ) where
-
-import Control.Monad.Trans.State (modify)
-import Control.Monad.Catch (MonadCatch)
-import Data.Sequence ((|>))
-import qualified Data.Text as Text
-import qualified Language.GraphQL.AST as Full
-import Language.GraphQL.Error (CollectErrsT, Error(..), Resolution(..))
-import Prelude hiding (null)
-
-addError :: MonadCatch m => forall a. a -> Error -> CollectErrsT m a
-addError returnValue error' = modify appender >> pure returnValue
-  where
-   appender :: Resolution m -> Resolution m
-   appender resolution@Resolution{ errors } = resolution
-       { errors = errors |> error'
-       }
-
-singleError :: [Full.Location] -> String -> Error
-singleError errorLocations message = Error (Text.pack message) errorLocations []