diff --git a/anki/deck.py b/anki/deck.py
index 89275fc64..f53671f9e 100644
--- a/anki/deck.py
+++ b/anki/deck.py
@@ -2798,7 +2798,7 @@ class DeckStorage(object):
             import apsw
             acon = apsw.Connection(unicode(path, "utf-8"))
             def connect():
-                pycon = sqlite.connect(acon)
+                pycon = sqlite.connect(acon, isolation_level=None)
                 return pycon
             engine = create_engine('sqlite:///', creator=connect)
         else: