diff --git a/doc/src/sgml/perform.sgml b/doc/src/sgml/perform.sgml
index 924f609..1346328 100644
--- a/doc/src/sgml/perform.sgml
+++ b/doc/src/sgml/perform.sgml
@@ -1840,7 +1840,7 @@ SELECT * FROM x, y, a, b, c WHERE something AND somethingelse;
      <listitem>
       <para>
        Increase <xref linkend="guc-max-wal-size"> and <xref
-       linkend="guc-checkpoint-timeout"> ; this reduces the frequency
+       linkend="guc-checkpoint-timeout">; this reduces the frequency
        of checkpoints, but increases the storage requirements of
        <filename>/pg_wal</>.
       </para>