diff --git a/Resources/config/mongodb.xml b/Resources/config/mongodb.xml
index 8e15533..703c1d2 100644
--- a/Resources/config/mongodb.xml
+++ b/Resources/config/mongodb.xml
@@ -23,7 +23,6 @@
 
         <service id="fos_elastica.listener.prototype.mongodb" class="%fos_elastica.listener.prototype.mongodb.class%" public="false" abstract="true">
             <argument /> <!-- object persister -->
-            <argument type="collection" /> <!-- events -->
             <argument type="service" id="fos_elastica.indexable" />
             <argument type="collection" /> <!-- configuration -->
             <argument /> <!-- logger -->