diff --git a/src/BeSimple/SoapBundle/DependencyInjection/BeSimpleSoapExtension.php b/src/BeSimple/SoapBundle/DependencyInjection/BeSimpleSoapExtension.php
index 11ff49a..55cd08d 100644
--- a/src/BeSimple/SoapBundle/DependencyInjection/BeSimpleSoapExtension.php
+++ b/src/BeSimple/SoapBundle/DependencyInjection/BeSimpleSoapExtension.php
@@ -152,7 +152,7 @@ class BeSimpleSoapExtension extends Extension
         $definition = new ChildDefinition('besimple.soap.client');
         $container->setDefinition(sprintf('besimple.soap.client.%s', $client), $definition);
 
-        if (3 === Kernel::MAJOR_VERSION) {
+        if (Kernel::MAJOR_VERSION >= 3) {
             $definition->setFactory(array(
                 new Reference(sprintf('besimple.soap.client.builder.%s', $client)),
                 'build'
diff --git a/src/BeSimple/SoapBundle/Resources/config/client.xml b/src/BeSimple/SoapBundle/Resources/config/client.xml
index 0af3c34..2c2465e 100644
--- a/src/BeSimple/SoapBundle/Resources/config/client.xml
+++ b/src/BeSimple/SoapBundle/Resources/config/client.xml
@@ -19,7 +19,9 @@
             <argument type="service" id="besimple.soap.cache" /> <!-- hack to load besimple cache configuration -->
         </service>
 
-        <service id="besimple.soap.client" factory-service="besimple.soap.client.builder" factory-method="build" class="%besimple.soap.client.builder.class%" abstract="true" />
+        <service id="besimple.soap.client" class="%besimple.soap.client.builder.class%" abstract="true">
+            <factory service="besimple.soap.client.builder" method="build" />
+        </service>
 
         <service id="besimple.soap.classmap" class="%besimple.soap.classmap.class%" abstract="true" />
     </services>