diff --git a/byg/src/ComputationM.hs b/byg/src/ComputationM.hs
index c766481..947e255 100644
--- a/byg/src/ComputationM.hs
+++ b/byg/src/ComputationM.hs
@@ -16,13 +16,10 @@ data ComputationRun a b = ComputationRun (Function a b)
 
 data TypedRun a b where
   F :: Function a b -> TypedRun a b
-  FIO' :: IsFIO f a b => f -> TypedRun a b
-  FIO :: FunctionIO a b -> TypedRun a b
+  FIO :: IsFIO f a b => f -> TypedRun a b
   TInject :: b -> TypedRun () b
   InList :: ComputationM TokenNotTraversable b -> TypedRun [a] [b]
 
-testtr = FIO' ListDirectory'
-
 instance Show (ComputationM t a) where
   show _ = "<computation>"
 
@@ -76,7 +73,7 @@ inject :: Show a => a -> ComputationM ta a
 inject x = genDependency (Dependency NoToken (TInject x))
 
 runIO :: (Show a, Show b, IsFIO f a b) => f -> Token t a -> ComputationM TokenNotTraversable b
-runIO f input = genDependency (Dependency input (FIO' f))
+runIO f input = genDependency (Dependency input (FIO f))
 
 makeTraversable :: Token TokenNotTraversable [a] -> Token TokenTraversable (Token TokenNotTraversable a)
 makeTraversable (Token n) = Token n
diff --git a/byg/src/Functions.hs b/byg/src/Functions.hs
index a959be6..9814068 100644
--- a/byg/src/Functions.hs
+++ b/byg/src/Functions.hs
@@ -16,8 +16,6 @@ data Function a b where
 deriving instance Show (Function a b)
 
 data FunctionIO a b where
-  ListDirectory :: FunctionIO FilePath [FilePath]
-  OpenImage :: FunctionIO FilePath Image
   ConvertImage :: FunctionIO (Image, ImageConversion) Image
   Save :: FunctionIO (a, FilePath) ()
   RunPandoc :: FunctionIO String String
@@ -29,13 +27,12 @@ deriving instance Show (FunctionIO a b)
 class (SourceState a, Show f) => IsFIO f a b | f -> a b where
   runFIO :: f -> a -> IO b
 
-
-data ListDirectory' = ListDirectory'
+data ListDirectory = ListDirectory
   deriving (Show)
-instance IsFIO ListDirectory' FilePath [FilePath] where
-  runFIO ListDirectory' path = undefined
+instance IsFIO ListDirectory FilePath [FilePath] where
+  runFIO ListDirectory path = undefined
 
-data OpenImage' = OpenImage'
+data OpenImage = OpenImage
   deriving (Show)
-instance IsFIO OpenImage' FilePath Image where
-  runFIO OpenImage' path = undefined
+instance IsFIO OpenImage FilePath Image where
+  runFIO OpenImage path = undefined
diff --git a/byg/src/Main.hs b/byg/src/Main.hs
index ea4c757..5c3d2c5 100644
--- a/byg/src/Main.hs
+++ b/byg/src/Main.hs
@@ -6,9 +6,9 @@ import ComputationM
 test :: ComputationM TokenNotTraversable ()
 test = do
   dir <- inject "retter"
-  dirContents <- runIO ListDirectory' dir
+  dirContents <- runIO ListDirectory dir
   let dirContents' = makeTraversable dirContents
-  u <- mapM (runIO OpenImage') dirContents'
+  u <- mapM (runIO OpenImage) dirContents'
   pure $ NoToken
 
 main :: IO ()