diff --git a/py/qstrdefs.h b/py/qstrdefs.h
index 2271941..85f6986 100644
--- a/py/qstrdefs.h
+++ b/py/qstrdefs.h
@@ -111,6 +111,7 @@
 Q(min)
 Q(namedtuple)
 Q(next)
+Q(open)
 Q(ord)
 Q(path)
 Q(pow)