diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services8.xml b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services8.xml
index c5fa5fb52d..b17e50043c 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services8.xml
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services8.xml
@@ -1,4 +1,4 @@
-<?xml version="1.0" ?>
+<?xml version="1.0" encoding="utf-8"?>
 
 <container xmlns="http://symfony.com/schema/dic/services"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"