diff --git a/Resources/config/webservice.xml b/Resources/config/webservice.xml
index 045039b..22e5a88 100644
--- a/Resources/config/webservice.xml
+++ b/Resources/config/webservice.xml
@@ -25,7 +25,7 @@
             <argument type="collection">
                 <argument key="cache_dir">%besimple.soap.cache_dir%</argument>
                 <argument key="debug">%kernel.debug%</argument>
-                <argument key="binder_request_header_class">%%besimple.soap.binder.request_header.rpcliteral.class%%</argument>
+                <argument key="binder_request_header_class">%besimple.soap.binder.request_header.rpcliteral.class%</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>
@@ -39,7 +39,7 @@
             <argument type="collection">
                 <argument key="cache_dir">%besimple.soap.cache_dir%</argument>
                 <argument key="debug">%kernel.debug%</argument>
-                <argument key="binder_request_header_class">%%besimple.soap.binder.request_header.documentwrapped.class%%</argument>
+                <argument key="binder_request_header_class">%besimple.soap.binder.request_header.documentwrapped.class%</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>