diff --git a/lib/Language/Haskell/Stylish/GHC.hs b/lib/Language/Haskell/Stylish/GHC.hs
index 021c7aa3..d21c4c12 100644
--- a/lib/Language/Haskell/Stylish/GHC.hs
+++ b/lib/Language/Haskell/Stylish/GHC.hs
@@ -73,7 +73,7 @@ baseDynFlags = defaultDynFlags GHCEx.fakeSettings
 
 getConDecls :: GHC.HsDataDefn GHC.GhcPs -> [GHC.LConDecl GHC.GhcPs]
 getConDecls d@GHC.HsDataDefn {} = case GHC.dd_cons d of
-  GHC.NewTypeCon con -> [con]
+  GHC.NewTypeCon con      -> [con]
   GHC.DataTypeCons _ cons -> cons
 
 showOutputable :: GHC.Outputable a => a -> String
diff --git a/lib/Language/Haskell/Stylish/Parse.hs b/lib/Language/Haskell/Stylish/Parse.hs
index b31af647..47ed13dd 100644
--- a/lib/Language/Haskell/Stylish/Parse.hs
+++ b/lib/Language/Haskell/Stylish/Parse.hs
@@ -7,6 +7,7 @@ module Language.Haskell.Stylish.Parse
 --------------------------------------------------------------------------------
 import           Data.Char                                          (toLower)
 import           Data.List                                          (stripPrefix)
+import qualified Data.List                                          as List
 import           Data.Maybe                                         (catMaybes,
                                                                      fromMaybe,
                                                                      listToMaybe,
@@ -24,7 +25,6 @@ import qualified GHC.Types.SrcLoc                                   as GHC
 import qualified GHC.Utils.Error                                    as GHC
 import qualified Language.Haskell.GhclibParserEx.GHC.Driver.Session as GHCEx
 import qualified Language.Haskell.GhclibParserEx.GHC.Parser         as GHCEx
-import qualified Data.List                                          as List
 
 --------------------------------------------------------------------------------
 import           Language.Haskell.Stylish.GHC
diff --git a/lib/Language/Haskell/Stylish/Step/Imports.hs b/lib/Language/Haskell/Stylish/Step/Imports.hs
index f63b2e1c..3f1ea0cf 100644
--- a/lib/Language/Haskell/Stylish/Step/Imports.hs
+++ b/lib/Language/Haskell/Stylish/Step/Imports.hs
@@ -606,7 +606,7 @@ isQualified = (/=) GHC.NotQualified . GHC.ideclQualified
 isHiding :: GHC.ImportDecl GHC.GhcPs -> Bool
 isHiding d = case GHC.ideclImportList d of
   Just (GHC.EverythingBut, _) -> True
-  _ -> False
+  _                           -> False
 
 isSource :: GHC.ImportDecl GHC.GhcPs -> Bool
 isSource = (==) GHC.IsBoot . GHC.ideclSource
diff --git a/lib/Language/Haskell/Stylish/Step/ModuleHeader.hs b/lib/Language/Haskell/Stylish/Step/ModuleHeader.hs
index ff32761f..a4b03151 100644
--- a/lib/Language/Haskell/Stylish/Step/ModuleHeader.hs
+++ b/lib/Language/Haskell/Stylish/Step/ModuleHeader.hs
@@ -21,6 +21,7 @@ import qualified GHC.Types.SrcLoc                      as GHC
 
 
 --------------------------------------------------------------------------------
+import qualified GHC.Unit.Module.Warnings              as GHC
 import           Language.Haskell.Stylish.Comments
 import qualified Language.Haskell.Stylish.Editor       as Editor
 import           Language.Haskell.Stylish.GHC
@@ -30,7 +31,6 @@ import           Language.Haskell.Stylish.Printer
 import           Language.Haskell.Stylish.Step
 import qualified Language.Haskell.Stylish.Step.Imports as Imports
 import           Language.Haskell.Stylish.Util         (flagEnds)
-import qualified GHC.Unit.Module.Warnings as GHC
 
 
 data Config = Config
diff --git a/lib/Language/Haskell/Stylish/Step/SimpleAlign.hs b/lib/Language/Haskell/Stylish/Step/SimpleAlign.hs
index aa6c2b38..7f32b114 100644
--- a/lib/Language/Haskell/Stylish/Step/SimpleAlign.hs
+++ b/lib/Language/Haskell/Stylish/Step/SimpleAlign.hs
@@ -13,11 +13,11 @@ module Language.Haskell.Stylish.Step.SimpleAlign
 import           Data.Either                     (partitionEithers)
 import           Data.Foldable                   (toList)
 import           Data.List                       (foldl1', sortOn)
+import qualified Data.List                       as List
 import           Data.Maybe                      (fromMaybe)
 import qualified GHC.Hs                          as Hs
 import qualified GHC.Parser.Annotation           as GHC
 import qualified GHC.Types.SrcLoc                as GHC
-import qualified Data.List                       as List
 
 --------------------------------------------------------------------------------
 import           Language.Haskell.Stylish.Align