diff --git a/.github/workflows/windows.yaml b/.github/workflows/windows.yaml
index e5e07ba1..fe6a1eb7 100644
--- a/.github/workflows/windows.yaml
+++ b/.github/workflows/windows.yaml
@@ -39,5 +39,5 @@ jobs:
       - name: Unit test
         env:
           SKIP_INTEGRATION_TESTS: 1
-        run: go test -mod=vendor -v ./client/... ./frontend/dockerfile/... ./session/... ./source/... ./util/...
+        run: go test -mod=vendor -v ./cache/... ./client/... ./frontend/dockerfile/... ./session/... ./source/... ./util/...
         working-directory: src/github.com/moby/buildkit
diff --git a/cache/contenthash/filehash.go b/cache/contenthash/filehash.go
index 27890421..0b526710 100644
--- a/cache/contenthash/filehash.go
+++ b/cache/contenthash/filehash.go
@@ -49,7 +49,6 @@ func NewFromStat(stat *fstypes.Stat) (hash.Hash, error) {
 		return nil, err
 	}
 	hdr.Name = "" // note: empty name is different from current has in docker build. Name is added on recursive directory scan instead
-	hdr.Mode = int64(chmodWindowsTarEntry(os.FileMode(hdr.Mode)))
 	hdr.Devmajor = stat.Devmajor
 	hdr.Devminor = stat.Devminor
 
diff --git a/cache/contenthash/filehash_unix.go b/cache/contenthash/filehash_unix.go
index 4f610d77..ccd2ebd2 100644
--- a/cache/contenthash/filehash_unix.go
+++ b/cache/contenthash/filehash_unix.go
@@ -12,10 +12,6 @@ import (
 	"golang.org/x/sys/unix"
 )
 
-func chmodWindowsTarEntry(perm os.FileMode) os.FileMode {
-	return perm
-}
-
 func setUnixOpt(path string, fi os.FileInfo, stat *fstypes.Stat) error {
 	s := fi.Sys().(*syscall.Stat_t)
 
diff --git a/cache/contenthash/filehash_windows.go b/cache/contenthash/filehash_windows.go
index e15bf1e5..c6bfce9e 100644
--- a/cache/contenthash/filehash_windows.go
+++ b/cache/contenthash/filehash_windows.go
@@ -8,16 +8,6 @@ import (
 	fstypes "github.com/tonistiigi/fsutil/types"
 )
 
-// chmodWindowsTarEntry is used to adjust the file permissions used in tar
-// header based on the platform the archival is done.
-func chmodWindowsTarEntry(perm os.FileMode) os.FileMode {
-	perm &= 0755
-	// Add the x bit: make everything +x from windows
-	perm |= 0111
-
-	return perm
-}
-
 func setUnixOpt(path string, fi os.FileInfo, stat *fstypes.Stat) error {
 	return nil
 }