diff --git a/traceur.xsl b/traceur.xsl
index 6d84c2e..e09583e 100644
--- a/traceur.xsl
+++ b/traceur.xsl
@@ -1,8 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <xsl:transform version="2.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:math="http://www.w3.org/2005/xpath-functions/math"
-   xmlns:xs="http://www.w3.org/2001/XMLSchema"
-   exclude-result-prefixes="xs math">
+   xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <xsl:output method="xml" indent="yes" />
 
    <!-- Déclaration des variables initiales -->