diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index 924309af26..24acc4c5b5 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -5271,8 +5271,8 @@ ANY <replaceable class="parameter">num_sync</replaceable> ( <replaceable class="
       <listitem>
        <para>
         Enables or disables the query planner's use of partitionwise grouping
-        or aggregation, which allows grouping or aggregation on a partitioned
-        tables performed separately for each partition.  If the <literal>GROUP
+        or aggregation, which allows grouping or aggregation on partitioned
+        tables to be performed separately for each partition.  If the <literal>GROUP
         BY</literal> clause does not include the partition keys, only partial
         aggregation can be performed on a per-partition basis, and
         finalization must be performed later.  Because partitionwise grouping