diff --git a/DependencyInjection/BeSimpleSoapExtension.php b/DependencyInjection/BeSimpleSoapExtension.php
index e6a271f..faeb6bf 100644
--- a/DependencyInjection/BeSimpleSoapExtension.php
+++ b/DependencyInjection/BeSimpleSoapExtension.php
@@ -60,8 +60,8 @@ class BeSimpleSoapExtension extends Extension
 
         $options = $container
             ->getDefinition('besimple.soap.context.'.$bindingSuffix)
-            ->getArgument(6);
+            ->getArgument(4);
 
-        $definition->replaceArgument(6, array_merge($options, $config));
+        $definition->replaceArgument(4, array_merge($options, $config));
     }
 }
diff --git a/Resources/config/webservice.xml b/Resources/config/webservice.xml
index 3dfa981..5b7798f 100644
--- a/Resources/config/webservice.xml
+++ b/Resources/config/webservice.xml
@@ -19,37 +19,29 @@
         <service id="besimple.soap.context.rpcliteral" class="%besimple.soap.context.class%" abstract="true">
             <argument type="service" id="besimple.soap.definition.loader" />
             <argument type="service" id="besimple.soap.definition.dumper.wsdl.rpcliteral" />
-            <argument type="service" id="besimple.soap.binder.request.rpcliteral" />
-            <argument type="service" id="besimple.soap.binder.response.rpcliteral" />
             <argument type="service" id="besimple.soap.type.repository" />
             <argument type="service" id="besimple.soap.converter.repository" />
             <argument type="collection">
                 <argument key="cache_dir">%besimple.soap.cache_dir%</argument>
                 <argument key="debug">%kernel.debug%</argument>
+                <argument key="binder_request_class">%besimple.soap.binder.request.rpcliteral.class%</argument>
+                <argument key="binder_response_class">%besimple.soap.binder.response.rpcliteral.class%</argument>
             </argument>
         </service>
 
         <service id="besimple.soap.context.documentwrapped" class="%besimple.soap.context.class%" abstract="true">
             <argument type="service" id="besimple.soap.definition.loader" />
             <argument type="service" id="besimple.soap.definition.dumper.wsdl.documentwrapped" />
-            <argument type="service" id="besimple.soap.binder.request.documentwrapped" />
-            <argument type="service" id="besimple.soap.binder.response.documentwrapped" />
             <argument type="service" id="besimple.soap.type.repository" />
             <argument type="service" id="besimple.soap.converter.repository" />
             <argument type="collection">
                 <argument key="cache_dir">%besimple.soap.cache_dir%</argument>
                 <argument key="debug">%kernel.debug%</argument>
+                <argument key="binder_request_class">%besimple.soap.binder.request.documentwrapped.class%</argument>
+                <argument key="binder_response_class">%besimple.soap.binder.response.documentwrapped.class%</argument>
             </argument>
         </service>
 
-        <service id="besimple.soap.binder.request.rpcliteral" class="%besimple.soap.binder.request.rpcliteral.class%" />
-
-        <service id="besimple.soap.binder.response.rpcliteral" class="%besimple.soap.binder.response.rpcliteral.class%" />
-
-        <service id="besimple.soap.binder.request.documentwrapped" class="%besimple.soap.binder.request.documentwrapped.class%" />
-
-        <service id="besimple.soap.binder.response.documentwrapped" class="%besimple.soap.binder.response.documentwrapped.class%" />
-
         <service id="besimple.soap.definition.dumper.wsdl.rpcliteral" class="%besimple.soap.definition.dumper.wsdl.rpcliteral.class%">
             <argument type="service" id="besimple.soap.definition.loader.annot_complextype" />
         </service>
diff --git a/WebServiceContext.php b/WebServiceContext.php
index f0acaf6..7303809 100644
--- a/WebServiceContext.php
+++ b/WebServiceContext.php
@@ -27,8 +27,6 @@ use Symfony\Component\Config\Loader\LoaderInterface;
  */
 class WebServiceContext
 {
-    private $requestMessageBinder;
-    private $responseMessageBinder;
     private $typeRepository;
     private $converterRepository;
 
@@ -40,13 +38,10 @@ class WebServiceContext
     private $serviceBinder;
     private $serverFactory;
 
-    public function __construct(LoaderInterface $loader, DumperInterface $dumper, MessageBinderInterface $requestMessageBinder, MessageBinderInterface $responseMessageBinder, TypeRepository $typeRepository, ConverterRepository $converterRepository, array $options) {
+    public function __construct(LoaderInterface $loader, DumperInterface $dumper, TypeRepository $typeRepository, ConverterRepository $converterRepository, array $options) {
         $this->loader         = $loader;
         $this->wsdlFileDumper = $dumper;
 
-        $this->requestMessageBinder  = $requestMessageBinder;
-        $this->responseMessageBinder = $responseMessageBinder;
-
         $this->typeRepository      = $typeRepository;
         $this->converterRepository = $converterRepository;
 
@@ -90,7 +85,11 @@ class WebServiceContext
     public function getServiceBinder()
     {
         if (null === $this->serviceBinder) {
-            $this->serviceBinder = new ServiceBinder($this->getServiceDefinition(), $this->requestMessageBinder, $this->responseMessageBinder);
+            $this->serviceBinder = new ServiceBinder(
+                $this->getServiceDefinition(),
+                new $this->options['binder_request_class'](),
+                new $this->options['binder_response_class']()
+            );
         }
 
         return $this->serviceBinder;