diff --git a/doc/src/sgml/mvcc.sgml b/doc/src/sgml/mvcc.sgml
index dbe5d8f..f88b16e 100644
--- a/doc/src/sgml/mvcc.sgml
+++ b/doc/src/sgml/mvcc.sgml
@@ -1542,7 +1542,7 @@ SELECT pg_advisory_lock(q.id) FROM
       This level of integrity protection using Serializable transactions
       does not yet extend to hot standby mode (<xref linkend="hot-standby">).
       Because of that, those using hot standby may want to use Repeatable
-      Read and explicit locking.on the master.
+      Read and explicit locking on the master.
      </para>
     </warning>
    </sect2>