diff --git a/reference/reflection/reflectiontype/isbuiltin.xml b/reference/reflection/reflectiontype/isbuiltin.xml
index 8a6fa41f2b..78e1a6bb3d 100644
--- a/reference/reflection/reflectiontype/isbuiltin.xml
+++ b/reference/reflection/reflectiontype/isbuiltin.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- $Revision$ -->
 
-<refentry xml:id="reflectiontype.isdisabled" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
+<refentry xml:id="reflectiontype.isbuiltin" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <refnamediv>
   <refname>ReflectionType::isBuiltin</refname>
   <refpurpose>Checks if it is a built-in type</refpurpose>