diff --git a/documentation/dev-manual/dev-manual-intro.xml b/documentation/dev-manual/dev-manual-intro.xml
index 21fba29670..634dab52e8 100644
--- a/documentation/dev-manual/dev-manual-intro.xml
+++ b/documentation/dev-manual/dev-manual-intro.xml
@@ -5,7 +5,7 @@
 <chapter id='dev-manual-intro'>
 
 <title>The Yocto Project Development Manual</title>
-    <section id='intro'>
+    <section id='dev-intro'>
         <title>Introduction</title>
 
         <para>
diff --git a/documentation/profile-manual/profile-manual-intro.xml b/documentation/profile-manual/profile-manual-intro.xml
index 0d3f5a6099..d6da758880 100644
--- a/documentation/profile-manual/profile-manual-intro.xml
+++ b/documentation/profile-manual/profile-manual-intro.xml
@@ -5,7 +5,7 @@
 <chapter id='profile-manual-intro'>
 
 <title>Yocto Project Profiling and Tracing Manual</title>
-    <section id='intro'>
+    <section id='prof-intro'>
         <title>Introduction</title>
 
         <para>
diff --git a/documentation/ref-manual/introduction.xml b/documentation/ref-manual/introduction.xml
index 19e9895ee6..37f2377bb8 100644
--- a/documentation/ref-manual/introduction.xml
+++ b/documentation/ref-manual/introduction.xml
@@ -2,7 +2,7 @@
 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"
 [<!ENTITY % poky SYSTEM "../poky.ent"> %poky; ] >
 
-<chapter id='intro'>
+<chapter id='ref-intro'>
 <title>Introduction</title>
 
 <section id='intro-welcome'>