diff --git a/Lib/test/pickletester.py b/Lib/test/pickletester.py
@@ -2781,29 +2781,30 @@ def test_clear_pickler_memo(self):
        # object again, the third serialized form should be identical to the
        # first one we obtained.
        data = ["abcdefg", "abcdefg", 44]
-        f = io.BytesIO()
-        pickler = self.pickler_class(f)

-        pickler.dump(data)
-        first_pickled = f.getvalue()

-        # Reset BytesIO object.
-        f.seek(0)
-        f.truncate()

-        pickler.dump(data)
-        second_pickled = f.getvalue()

-        # Reset the Pickler and BytesIO objects.
-        pickler.clear_memo()
-        f.seek(0)
-        f.truncate()

-        pickler.dump(data)
-        third_pickled = f.getvalue()

-        self.assertNotEqual(first_pickled, second_pickled)
-        self.assertEqual(first_pickled, third_pickled)

    def test_priming_pickler_memo(self):
        # Verify that we can set the Pickler's memo attribute.

diff --git a/Misc/NEWS.d/next/Library/2018-04-03-10-37-13.bpo-33209.9sGWE_.rst b/Misc/NEWS.d/next/Library/2018-04-03-10-37-13.bpo-33209.9sGWE_.rst
@@ -0,0 +1 @@
diff --git a/Modules/_pickle.c b/Modules/_pickle.c
@@ -4152,9 +4152,10 @@ dump(PicklerObject *self, PyObject *obj)
    }

    if (save(self, obj, 0) < 0 ||
-        _Pickler_Write(self, &stop_op, 1) < 0)
        return -1;
-
    return 0;
}