diff --git a/doc/src/sgml/ref/clusterdb.sgml b/doc/src/sgml/ref/clusterdb.sgml
index b25845ffc67..d11ac2dc9c4 100644
--- a/doc/src/sgml/ref/clusterdb.sgml
+++ b/doc/src/sgml/ref/clusterdb.sgml
@@ -15,7 +15,7 @@ PostgreSQL documentation
  </refmeta>
 
  <refnamediv>
-  <refname id="clusterdb">clusterdb</refname>
+  <refname>clusterdb</refname>
   <refpurpose>cluster a <productname>PostgreSQL</productname> database</refpurpose>
  </refnamediv>
 
diff --git a/doc/src/sgml/ref/postmaster.sgml b/doc/src/sgml/ref/postmaster.sgml
index 311510a44d9..7b544ed0b61 100644
--- a/doc/src/sgml/ref/postmaster.sgml
+++ b/doc/src/sgml/ref/postmaster.sgml
@@ -15,7 +15,7 @@ PostgreSQL documentation
  </refmeta>
 
  <refnamediv>
-  <refname id="postmaster-ref">postmaster</refname>
+  <refname>postmaster</refname>
   <refpurpose><productname>PostgreSQL</productname> database server</refpurpose>
  </refnamediv>
 
diff --git a/doc/src/sgml/ref/reindexdb.sgml b/doc/src/sgml/ref/reindexdb.sgml
index 5e21fbcc4e6..0128118cc7a 100644
--- a/doc/src/sgml/ref/reindexdb.sgml
+++ b/doc/src/sgml/ref/reindexdb.sgml
@@ -15,7 +15,7 @@ PostgreSQL documentation
  </refmeta>
 
  <refnamediv>
-  <refname id="reindexdb">reindexdb</refname>
+  <refname>reindexdb</refname>
   <refpurpose>reindex a <productname>PostgreSQL</productname> database</refpurpose>
  </refnamediv>
 
diff --git a/doc/src/sgml/ref/vacuumdb.sgml b/doc/src/sgml/ref/vacuumdb.sgml
index 775c9ec651b..cf7f77ba30a 100644
--- a/doc/src/sgml/ref/vacuumdb.sgml
+++ b/doc/src/sgml/ref/vacuumdb.sgml
@@ -15,7 +15,7 @@ PostgreSQL documentation
  </refmeta>
 
  <refnamediv>
-  <refname id="vacuumdb">vacuumdb</refname>
+  <refname>vacuumdb</refname>
   <refpurpose>garbage-collect and analyze a <productname>PostgreSQL</productname> database</refpurpose>
  </refnamediv>