diff --git a/postgresql/doc/src/sgml/ref/create_function.sgml b/postgresql/doc/src/sgml/ref/create_function.sgml
index 8775b04e..b90a7fd4 100644
--- a/postgresql/doc/src/sgml/ref/create_function.sgml
+++ b/postgresql/doc/src/sgml/ref/create_function.sgml
@@ -21,10 +21,6 @@ doc/src/sgml/ref/create_function.sgml
   <refpurpose>定义一个新函数</refpurpose>
  </refnamediv>
 
- <indexterm zone="sql-createfunction">
-  <primary>CREATE FUNCTION</primary>
- </indexterm>
-
  <refsynopsisdiv>
 <synopsis>
 CREATE [ OR REPLACE ] FUNCTION
diff --git a/postgresql/doc/src/sgml/ref/vacuum.sgml b/postgresql/doc/src/sgml/ref/vacuum.sgml
index b19cfe0d..cd38616f 100644
--- a/postgresql/doc/src/sgml/ref/vacuum.sgml
+++ b/postgresql/doc/src/sgml/ref/vacuum.sgml
@@ -24,10 +24,6 @@ PostgreSQL documentation
   <refpurpose>垃圾收集以及可选地分析一个数据库</refpurpose>
  </refnamediv>
 
- <indexterm zone="sql-vacuum">
-  <primary>VACUUM</primary>
- </indexterm>
-
  <refsynopsisdiv>
 <synopsis>
 VACUUM [ ( { FULL | FREEZE | VERBOSE | ANALYZE } [, ...] ) ] [ <replaceable class="PARAMETER">table_name</replaceable> [ (<replaceable class="PARAMETER">column_name</replaceable> [, ...] ) ] ]