diff --git a/tests/test_core.py b/tests/test_core.py
index 6ad5c82b..4a93700f 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -94,15 +94,3 @@ def test_transaction_exists(monkeypatch, items, exists):
         RqlQuery, 'run', lambda x, y: namedtuple('response', 'items')(items))
     bigchain = Bigchain(public_key='pubkey', private_key='privkey')
     assert bigchain.transaction_exists('txid') is exists
-
-
-@pytest.mark.skip(reason='until tim decides')
-def test_write_transaction_no_sideffects(b):
-    from rethinkdb.errors import ReqlOpFailedError
-    transaction = {'id': 'abc'}
-    expected = {'id': 'abc'}
-    with pytest.raises(ReqlOpFailedError):
-        b.write_transaction(transaction)
-    assert transaction == expected
-    with pytest.raises(KeyError):
-        transaction['assignee']