diff --git a/lib/newfol/filemanip.py b/lib/newfol/filemanip.py
index 05746ed..1fd7da8 100644
--- a/lib/newfol/filemanip.py
+++ b/lib/newfol/filemanip.py
@@ -210,12 +210,12 @@ class FileFormat:
         self._txnstore = txn
         self._options = options or {}
     def _open(self, mode):
-        self._txnstore.prepare_open(self._filename, "w")
+        self._txnstore.prepare_open(self._filename, mode)
         if self._isfp:
             fp = self._file
         else:
             fp = open(self._filename, mode)
-        self._txnstore.commit_open(self._filename, "w")
+        self._txnstore.commit_open(self._filename, mode)
         return fp
     def _close(self, fp):
         self._txnstore.prepare_close()
diff --git a/test/testfilemanip.py b/test/testfilemanip.py
index 7161ab6..cbe0529 100755
--- a/test/testfilemanip.py
+++ b/test/testfilemanip.py
@@ -85,7 +85,6 @@ class SHA256TransactionTest(unittest.TestCase):
         x.tempfile = self.create_small_database(x.tempdir)
         x.fs = FileStorage("csv", x.tempfile, "sha256", *args)
         return x
-    @unittest.expectedFailure
     def test_missing_not_forgiving(self):
         x = self.create_filestorage({"forgiving": False})
         with self.assertRaisesRegex(newfol.exception.UpgradeNeededError,