diff --git a/test/codesniffer/ruleset.dtd b/test/codesniffer/ruleset.dtd
new file mode 100755
index 00000000000..0d498bb033c
--- /dev/null
+++ b/test/codesniffer/ruleset.dtd
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!ELEMENT ruleset (description,rule+)>
+<!ATTLIST ruleset name CDATA "">
+<!ELEMENT description (#PCDATA)>
+<!ELEMENT rule (properties*,severity*)>
+<!ATTLIST rule ref CDATA "">
+<!ELEMENT properties (property+)>
+<!ELEMENT property (#PCDATA)>
+<!ATTLIST property name CDATA "">
+<!ATTLIST property value CDATA "">
+<!ELEMENT severity (#PCDATA)>
diff --git a/test/codesniffer/ruleset.xml b/test/codesniffer/ruleset.xml
index 445aa112bfe..ae80f00bc7c 100755
--- a/test/codesniffer/ruleset.xml
+++ b/test/codesniffer/ruleset.xml
@@ -1,11 +1,12 @@
 <?xml version="1.0"?>
+<!DOCTYPE ruleset SYSTEM "ruleset.dtd">
 <ruleset name="Dolibarr">
 	<description>Dolibarr coding standard.</description>
 
 	<!-- List of all tests -->
 
     <rule ref="Generic.CodeAnalysis.EmptyStatement" />
-
+ 
     <!-- <rule ref="Generic.CodeAnalysis.ForLoopShouldBeWhileLoop" /> -->
 
     <rule ref="Generic.CodeAnalysis.ForLoopWithTestFunctionCall" />