diff --git a/src/PostgREST/DbStructure.hs b/src/PostgREST/DbStructure.hs
index 92467e322..5fdae392e 100644
--- a/src/PostgREST/DbStructure.hs
+++ b/src/PostgREST/DbStructure.hs
@@ -106,9 +106,7 @@ accessibleProcs =
   addName pd = (pdName pd, pd)
 
   parseArgs :: Text -> [PgArg]
-  parseArgs = mapMaybe toks2arg
-                . map (split (==' ') . strip)
-                . split (==',')
+  parseArgs = mapMaybe (toks2arg . split (==' ') . strip) . split (==',')
 
   toks2arg :: [Text] -> Maybe PgArg
   toks2arg (x:y:"DEFAULT":_) = Just (PgArg x y False)
diff --git a/src/PostgREST/OpenAPI.hs b/src/PostgREST/OpenAPI.hs
index 1846895e3..bf43f3689 100644
--- a/src/PostgREST/OpenAPI.hs
+++ b/src/PostgREST/OpenAPI.hs
@@ -41,7 +41,7 @@ makeTableDef (t, cs, _) =
   let tn = tableName t in
       (tn, (mempty :: Schema)
         & type_ .~ SwaggerObject
-        & properties .~ (fromList $ map makeProperty cs))
+        & properties .~ fromList (map makeProperty cs))
 
 makeProperty :: Column -> (Text, Referenced Schema)
 makeProperty c = (colName c, Inline u)
@@ -58,8 +58,8 @@ makeProcDef pd = ("(rpc) " <> pdName pd, s)
   where
     s = (mempty :: Schema)
           & type_ .~ SwaggerObject
-          & properties .~ (fromList $ map makeProcProperty (pdArgs pd))
-          & required .~ (map pgaName $ filter pgaReq (pdArgs pd))
+          & properties .~ fromList (map makeProcProperty (pdArgs pd))
+          & required .~ map pgaName (filter pgaReq (pdArgs pd))
 
 makeProcProperty :: PgArg -> (Text, Referenced Schema)
 makeProcProperty (PgArg n t _) = (n, Inline s)
@@ -242,7 +242,7 @@ makeRootPathItem = ("/", p)
 
 makePathItems :: [ProcDescription] -> [(Table, [Column], [Text])] -> InsOrdHashMap FilePath PathItem
 makePathItems pds ti = fromList $ makeRootPathItem :
-  (map makePathItem ti) ++ (map makeProcPathItem pds)
+  map makePathItem ti ++ map makeProcPathItem pds
 
 escapeHostName :: Text -> Text
 escapeHostName "*"  = "0.0.0.0"
@@ -261,7 +261,7 @@ postgrestSpec pds ti (s, h, p, b) = (mempty :: Swagger)
       & title .~ "PostgREST API"
       & description ?~ "This is a dynamic API generated by PostgREST")
   & host .~ h'
-  & definitions .~ (fromList $ map makeTableDef ti <> map makeProcDef pds)
+  & definitions .~ fromList (map makeTableDef ti <> map makeProcDef pds)
   & paths .~ makePathItems pds ti
     where
       s' = if s == "http" then Http else Https