diff --git a/appendices/migration54.xml b/appendices/migration54.xml
index 16b4026a9f..eb2854971b 100644
--- a/appendices/migration54.xml
+++ b/appendices/migration54.xml
@@ -629,13 +629,6 @@
   </itemizedlist>
  </section>
 
- <section xml:id="migration54.class-constants">
-  <title>New Class Constants</title>
-  <simpara>
-   Several new class constants were introduced in 5.4.0:
-  </simpara>
- </section>
-
  <section xml:id="migration54.methods">
   <title>New Methods</title>
   <simpara>
@@ -771,20 +764,6 @@
   </itemizedlist>
  </section>
 
- <section xml:id="migration54.new-extensions">
-  <title>New Extensions</title>
-  <simpara>
-   The following new extensions are added (by default) as of PHP 5.4.0:
-  </simpara>
-  <itemizedlist>
-   <listitem>
-    <simpara>
-     <!-- Placeholder for "New Extensions". -->
-    </simpara>
-   </listitem>
-  </itemizedlist>
- </section>
-
  <section xml:id="migration54.removed-extensions">
   <title>Removed Extensions</title>
   <simpara>
@@ -804,18 +783,6 @@
 
  <section xml:id="migration54.extensions-other">
   <title>Other changes to extensions</title>
-  <simpara>
-   The following extensions can no longer be disabled during build
-   configuration:
-  </simpara>
-  <itemizedlist>
-   <listitem>
-    <simpara>
-     <!-- Placeholder for "Other changes to extensions" - Cannot be disabled during build. -->
-    </simpara>
-   </listitem>
-  </itemizedlist>
-
   <simpara>
    Changes in extension behavior, and new features:
   </simpara>