diff --git a/xmlrpc/README.txt b/xmlrpc/README.txt
index 6e28a9b..ace0bfd 100755
--- a/xmlrpc/README.txt
+++ b/xmlrpc/README.txt
@@ -149,6 +149,8 @@ Updating the concept map
   >>> zope3Id = xrf.getObjectByName('zope3')['id']
   >>> xrf.assignChild(zopeId, zope3Id, defaultPred['id'])
   'OK'
+  >>> xrf.deassignChild(zopeId, zope3Id, defaultPred['id'])
+  'OK'
 
 
 Fin de partie
diff --git a/xmlrpc/common.py b/xmlrpc/common.py
index ddb224f..08e2e0c 100644
--- a/xmlrpc/common.py
+++ b/xmlrpc/common.py
@@ -100,6 +100,13 @@ class LoopsMethods(MethodPublisher):
         obj.assignChild(child, pred)
         return 'OK'
 
+    def deassignChild(self, objId, predicateId, childId):
+        obj = getObjectForUid(objId)
+        pred = getObjectForUid(predicateId)
+        child = getObjectForUid(childId)
+        obj.deassignChild(child, [pred])
+        return 'OK'
+
 
 def objectAsDict(obj):
     mapping = {'id': getUidForObject(obj), 'name': getName(obj), 'title': obj.title,
diff --git a/xmlrpc/configure.zcml b/xmlrpc/configure.zcml
index a452806..3fc2e6f 100644
--- a/xmlrpc/configure.zcml
+++ b/xmlrpc/configure.zcml
@@ -26,7 +26,7 @@
                getDefaultPredicate getTypePredicate getTypeConcept
                getConceptTypes getPredicates
                getChildren getParents
-               assignChild"
+               assignChild deassignChild"
       permission="loops.xmlrpc.ManageConcepts"
       />