diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml
index 30e4170963..354f9e57bd 100644
--- a/doc/src/sgml/ddl.sgml
+++ b/doc/src/sgml/ddl.sgml
@@ -3957,8 +3957,8 @@ ALTER TABLE measurement ATTACH PARTITION measurement_y2008m02
      As explained above, it is possible to create indexes on partitioned tables
      so that they are applied automatically to the entire hierarchy.
      This is very
-     convenient, as not only will the existing partitions become indexed, but
-     also any partitions that are created in the future will.  One limitation is
+     convenient, as not only the existing partitions will be indexed, but
+     so will any partitions that are created in the future.  One limitation is
      that it's not possible to use the <literal>CONCURRENTLY</literal>
      qualifier when creating such a partitioned index.  To avoid long lock
      times, it is possible to use <command>CREATE INDEX ON ONLY</command>