diff --git a/doc/src/sgml/mvcc.sgml b/doc/src/sgml/mvcc.sgml
index f2272bc865..306def4a15 100644
--- a/doc/src/sgml/mvcc.sgml
+++ b/doc/src/sgml/mvcc.sgml
@@ -461,7 +461,8 @@ COMMIT;
even though they are not yet committed.) This is a stronger
guarantee than is required by the SQL standard
for this isolation level, and prevents all of the phenomena described
- in . As mentioned above, this is
+ in except for serialization
+ anomalies. As mentioned above, this is
specifically allowed by the standard, which only describes the
minimum protections each isolation level must
provide.