diff --git a/tools/tht/internal/safeio/private_windows_test.go b/tools/tht/internal/safeio/private_windows_test.go
index a8dbf2b3..84e66845 100644
--- a/tools/tht/internal/safeio/private_windows_test.go
+++ b/tools/tht/internal/safeio/private_windows_test.go
@@ -91,28 +91,16 @@ func TestOwnerOnlySecurityDescriptorNativeCreate(t *testing.T) {
 		t.Fatal(err)
 	}
 	defer parents.Close()
-	security, err := newOwnerOnlySecurityDescriptor()
-	if err != nil {
-		t.Fatalf("newOwnerOnlySecurityDescriptor() error = %T %v", err, err)
-	}
-	defer security.Close()
-	handle, err := openWindowsRelativeObject(
+	value, err := createWindowsPrivateRegularAtWithAccess(
 		parents.handles[len(parents.handles)-1],
 		target,
-		windows.FILE_GENERIC_READ|windows.FILE_GENERIC_WRITE|windows.DELETE,
-		windows.FILE_CREATE,
-		windows.FILE_NON_DIRECTORY_FILE|windows.FILE_SYNCHRONOUS_IO_NONALERT|windows.FILE_OPEN_REPARSE_POINT,
-		security,
+		windows.GENERIC_WRITE,
 	)
 	if err != nil {
-		t.Fatalf("NtCreateFile() private regular error = %T %v", err, err)
+		t.Fatalf("createWindowsPrivateRegularAtWithAccess() write-only error = %T %v", err, err)
 	}
-	defer windows.CloseHandle(handle)
-	if err := windows.GetFileInformationByHandle(handle, new(windows.ByHandleFileInformation)); err != nil {
-		t.Fatalf("GetFileInformationByHandle() after private create = %T %v", err, err)
-	}
-	if err := validateOwnerOnlyDACL(handle); err != nil {
-		t.Fatalf("validateOwnerOnlyDACL() after private create = %T %v", err, err)
+	if err := value.Close(); err != nil {
+		t.Fatalf("close private regular after write-only create = %T %v", err, err)
 	}
 }