diff --git a/conf/attribute-resolver.xml b/conf/attribute-resolver.xml
index f5e9576..5352cbe 100644
--- a/conf/attribute-resolver.xml
+++ b/conf/attribute-resolver.xml
@@ -47,7 +47,7 @@
         <InputDataConnector ref="myLDAP" attributeNames="pager"/>
     </AttributeDefinition>
 
-    <AttributeDefinition xsi:type="Simple" id="surname">
+    <AttributeDefinition xsi:type="Simple" id="sn">
         <InputDataConnector ref="myLDAP" attributeNames="sn"/>
     </AttributeDefinition>