diff --git a/reference/cairo/cairo.xml b/reference/cairo/cairo.xml
index 6644c389f9..eac58e91e3 100644
--- a/reference/cairo/cairo.xml
+++ b/reference/cairo/cairo.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- $Revision: $ -->
+<!-- $Revision$ -->
 
 <phpdoc:classref xml:id="class.cairo" xmlns:phpdoc="http://php.net/ns/phpdoc" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xi="http://www.w3.org/2001/XInclude">