diff --git a/config/alfresco/model/jcrModel.xml b/config/alfresco/model/jcrModel.xml
index 5b72c7df61..b8075aad9c 100644
--- a/config/alfresco/model/jcrModel.xml
+++ b/config/alfresco/model/jcrModel.xml
@@ -5,6 +5,7 @@
 
    <imports>
       <import uri="http://www.alfresco.org/model/dictionary/1.0" prefix="d" />
+      <import uri="http://www.alfresco.org/model/system/1.0" prefix="sys" />
    </imports>
 
    <namespaces>
@@ -18,6 +19,7 @@
    <types>
 
       <type name="nt:base">
+         <parent>sys:base</parent>
          <properties>
             <property name="jcr:primaryType">
                <type>d:qname</type>