diff --git a/doc/src/sgml/contrib.sgml b/doc/src/sgml/contrib.sgml
index 7ca62a4..48ca717 100644
--- a/doc/src/sgml/contrib.sgml
+++ b/doc/src/sgml/contrib.sgml
@@ -135,7 +135,7 @@ CREATE EXTENSION <replaceable>module_name</> FROM unpackaged;
  &pgtrgm;
  &pgvisibility;
  &postgres-fdw;
- &require_where;
+ &require-where;
  &seg;
  &sepgsql;
  &contrib-spi;
diff --git a/doc/src/sgml/filelist.sgml b/doc/src/sgml/filelist.sgml
index 8079cbd..4552273 100644
--- a/doc/src/sgml/filelist.sgml
+++ b/doc/src/sgml/filelist.sgml
@@ -141,7 +141,7 @@
 <!ENTITY pgtrgm          SYSTEM "pgtrgm.sgml">
 <!ENTITY pgvisibility    SYSTEM "pgvisibility.sgml">
 <!ENTITY postgres-fdw    SYSTEM "postgres-fdw.sgml">
-<!ENTITY require_where   SYSTEM "require_where.sgml">
+<!ENTITY require-where   SYSTEM "require_where.sgml">
 <!ENTITY seg             SYSTEM "seg.sgml">
 <!ENTITY contrib-spi     SYSTEM "contrib-spi.sgml">
 <!ENTITY sepgsql         SYSTEM "sepgsql.sgml">
diff --git a/doc/src/sgml/require_where.sgml b/doc/src/sgml/require_where.sgml
index 30bc05a..de075c4 100644
--- a/doc/src/sgml/require_where.sgml
+++ b/doc/src/sgml/require_where.sgml
@@ -1,9 +1,9 @@
 <!-- doc/src/sgml/require_where.sgml -->
 
-<sect1 id="require_where" xreflabel="require_where">
+<sect1 id="require-where" xreflabel="require_where">
  <title>require_where</title>
 
- <indexterm zone="require_where">
+ <indexterm zone="require-where">
   <primary>require_where</primary>
  </indexterm>
 
@@ -47,7 +47,7 @@ $ psql -U postgres
   <title>GUC Parameters</title>
 
   <variablelist>
-   <varlistentry id="guc-require_where-delete" xreflabel="require_where.delete">
+   <varlistentry id="guc-require-where-delete" xreflabel="require_where.delete">
     <term>
      <varname>require_where.delete</varname> (<type>boolean</type>)
      <indexterm>
@@ -65,7 +65,7 @@ $ psql -U postgres
      </para>
     </listitem>
    </varlistentry>
-   <varlistentry id="guc-require_where-update" xreflabel="require_where.update">
+   <varlistentry id="guc-require-where-update" xreflabel="require_where.update">
     <term>
      <varname>require_where.update</varname> (<type>boolean</type>)
      <indexterm>