diff --git a/Documentation/Models/Docbook/Default/Licenses/gpl.docbook b/Documentation/Models/Docbook/Default/Licenses/gpl.docbook
index 50d371b..7394198 100644
--- a/Documentation/Models/Docbook/Default/Licenses/gpl.docbook
+++ b/Documentation/Models/Docbook/Default/Licenses/gpl.docbook
@@ -1,8 +1,5 @@
 <?xml version="1.0"?>
-<!DOCTYPE appendix PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
-    "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"
-    []>
-
+<!DOCTYPE appendix PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" []>
 <appendix id="licenses-gpl">
 
     <title>GNU General Public License</title>