diff --git a/src/pfwbged/policy/indexers.py b/src/pfwbged/policy/indexers.py
index f7114e5..0ff8f6d 100644
--- a/src/pfwbged/policy/indexers.py
+++ b/src/pfwbged/policy/indexers.py
@@ -1,6 +1,7 @@
 from five import grok
 from plone.indexer import indexer
 from plone import api
+from Products.CMFCore.utils import getToolByName
 
 from collective.dms.basecontent.dmsdocument import IDmsDocument
 
@@ -36,3 +37,16 @@ def recipients_as_text(obj, **kw):
     return ' / '.join([x.to_object.get_full_title() for x in obj.recipients])
 
 grok.global_adapter(recipients_as_text, name='recipients_as_text')
+
+
+@indexer(IDmsDocument)
+def can_last_version_validate(obj, **kw):
+    for child in reversed(obj.values()):
+        if child.portal_type != 'dmsmainfile':
+            continue
+        wf_tool = getToolByName(obj, 'portal_workflow')
+        workflowActions = wf_tool.listActionInfos(object=child)
+        return bool('validate' in [x.get('id') for x in workflowActions])
+    return False
+
+grok.global_adapter(can_last_version_validate, name='can_last_version_validate')
diff --git a/src/pfwbged/policy/profiles/default/catalog.xml b/src/pfwbged/policy/profiles/default/catalog.xml
index a9d3026..d2cd968 100644
--- a/src/pfwbged/policy/profiles/default/catalog.xml
+++ b/src/pfwbged/policy/profiles/default/catalog.xml
@@ -3,6 +3,9 @@
   <index name="has_final_unsigned_version" meta_type="FieldIndex">
     <indexed_attr value="has_final_unsigned_version"/>
   </index>
+  <index name="can_last_version_validate" meta_type="FieldIndex">
+    <indexed_attr value="can_last_version_validate"/>
+  </index>
 
   <!-- those two are actually delegated to solr, but plone.app.querystring
        requires indexes to be declared in the plone catalog -->
@@ -14,6 +17,7 @@
   </index>
 
   <column value="has_final_unsigned_version"/>
+  <column value="can_last_version_validate"/>
   <column value="sender_as_text"/>
   <column value="recipients_as_text"/>
 </object>