diff --git a/Annex/Init.hs b/Annex/Init.hs
index 1d4c4c8008..bcfe017757 100644
--- a/Annex/Init.hs
+++ b/Annex/Init.hs
@@ -48,10 +48,10 @@ import Annex.Perms
 import Utility.FileMode
 import System.Posix.User
 import qualified Utility.LockFile.Posix as Posix
+import Data.Either
 #endif
 
 import qualified Data.Map as M
-import Data.Either
 
 checkCanInitialize :: Annex a -> Annex a
 checkCanInitialize a = inRepo (noAnnexFileContent . Git.repoWorkTree) >>= \case
diff --git a/Build/BundledPrograms.hs b/Build/BundledPrograms.hs
index 3af2b1e9da..096eeee29f 100644
--- a/Build/BundledPrograms.hs
+++ b/Build/BundledPrograms.hs
@@ -83,5 +83,7 @@ preferredBundledPrograms = catMaybes
 	-- its kernel, and avoid using them if not available.
 	]
   where
+#ifndef mingw32_HOST_OS
 	ifset True s = Just s
 	ifset False _ = Nothing
+#endif
diff --git a/Command/EnableTor.hs b/Command/EnableTor.hs
index f05fccea4d..1807660dd6 100644
--- a/Command/EnableTor.hs
+++ b/Command/EnableTor.hs
@@ -41,7 +41,11 @@ seek = withWords (commandAction . start)
 -- This runs as root, so avoid making any commits or initializing
 -- git-annex, or doing other things that create root-owned files.
 start :: [String] -> CommandStart
+#ifndef mingw32_HOST_OS
 start os = do
+#else
+start _os = do
+#endif
 	uuid <- getUUID
 	when (uuid == NoUUID) $
 		giveup "This can only be run in a git-annex repository."
diff --git a/Remote/Git.hs b/Remote/Git.hs
index 2b516a9442..e184aebca2 100644
--- a/Remote/Git.hs
+++ b/Remote/Git.hs
@@ -42,7 +42,6 @@ import qualified CmdLine.GitAnnexShell.Fields as Fields
 import Logs.Location
 import Utility.Metered
 import Utility.CopyFile
-import Utility.FileMode
 import Utility.Env
 import Utility.Batch
 import Utility.SimpleProtocol
@@ -61,6 +60,10 @@ import Types.NumCopies
 import Annex.Action
 import Messages.Progress
 
+#ifndef mingw32_HOST_OS
+import Utility.FileMode
+#endif
+
 import Control.Concurrent
 import Control.Concurrent.MSampleVar
 import qualified Data.Map as M
@@ -719,13 +722,14 @@ newCopyCoWTried = CopyCoWTried <$> newEmptyMVar
 {- Copys a file. Uses copy-on-write if it is supported. Otherwise,
  - uses rsync, so that interrupted copies can be resumed. -}
 rsyncOrCopyFile :: State -> [CommandParam] -> FilePath -> FilePath -> MeterUpdate -> Annex Bool
-rsyncOrCopyFile st rsyncparams src dest p =
 #ifdef mingw32_HOST_OS
+rsyncOrCopyFile _st _rsyncparams src dest p =
 	-- rsync is only available on Windows in some installation methods,
 	-- and is not strictly needed here, so don't use it.
 	docopywith copyFileExternal
   where
 #else
+rsyncOrCopyFile st rsyncparams src dest p =
 	-- If multiple threads reach this at the same time, they
 	-- will both try CoW, which is acceptable.
 	ifM (liftIO $ isEmptyMVar copycowtried)
diff --git a/Utility/InodeCache.hs b/Utility/InodeCache.hs
index af39219b3b..fca478ff87 100644
--- a/Utility/InodeCache.hs
+++ b/Utility/InodeCache.hs
@@ -170,7 +170,9 @@ genInodeCache f delta = catchDefaultIO Nothing $
 toInodeCache :: TSDelta -> FilePath -> FileStatus -> IO (Maybe InodeCache)
 toInodeCache (TSDelta getdelta) f s
 	| isRegularFile s = do
+#ifndef mingw32_HOST_OS
 		delta <- getdelta
+#endif
 		sz <- getFileSize' f s
 #ifdef mingw32_HOST_OS
 		mtime <- MTimeHighRes . utcTimeToPOSIXSeconds <$> getModificationTime f
diff --git a/Utility/Path/Max.hs b/Utility/Path/Max.hs
index 8ae35dfba7..49e65d38b0 100644
--- a/Utility/Path/Max.hs
+++ b/Utility/Path/Max.hs
@@ -10,8 +10,6 @@
 
 module Utility.Path.Max where
 
-import System.FilePath
-
 #ifndef mingw32_HOST_OS
 import Utility.Exception
 import System.Posix.Files