diff --git a/internals2/buildsys/skeleton.xml b/internals2/buildsys/skeleton.xml
index 87b6aaaf61..a4081e7019 100644
--- a/internals2/buildsys/skeleton.xml
+++ b/internals2/buildsys/skeleton.xml
@@ -3,7 +3,7 @@
  <sect1 xml:id="internals2.buildsys.skeleton" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
   <title>The ext_skel script</title>
   <para>
-   A Zend extension is composed of several files common to all extensions. As
+   A PHP extension is composed of several files common to all extensions. As
    the details of many of those files are similar from extension to extension,
    it can be laborious to duplicate the content for each one. Fortunately, there
    is a script which can do all of the initial setup for you. It's called