diff --git a/addons/crm/crm_lead.py b/addons/crm/crm_lead.py
index f97b7d0adf8..b1a0effaf63 100644
--- a/addons/crm/crm_lead.py
+++ b/addons/crm/crm_lead.py
@@ -345,19 +345,12 @@ class crm_lead(format_address, osv.osv):
             section_ids = self.pool.get('crm.case.section').search(cr, uid, ['|', ('user_id', '=', user_id), ('member_ids', '=', user_id)], context=context)
             if section_ids:
                 section_id = section_ids[0]
-        return {'value': {'section_id': section_id}}
-        
-    def on_change_user(self, cr, uid, ids, user_id, context=None):
-        """ Override of on change user_id on lead/opportunity; when having sale
-            the new logic is :
-            - use user.default_section_id
-            - or fallback on previous behavior """
-        if user_id:
+        else:
             user = self.pool.get('res.users').browse(cr, uid, user_id, context=context)
             if user.default_section_id and user.default_section_id.id:
                 return {'value': {'section_id': user.default_section_id.id}}
-        return super(sale_crm_lead, self).on_change_user(cr, uid, ids, user_id, context=context)
-    
+        return {'value': {'section_id': section_id}}
+        
     def stage_find(self, cr, uid, cases, section_id, domain=None, order='sequence', context=None):
         """ Override of the base.stage method
             Parameter of the stage search taken from the lead:
diff --git a/addons/crm/security/ir.model.access.csv b/addons/crm/security/ir.model.access.csv
index 639c5928894..52648c8e347 100644
--- a/addons/crm/security/ir.model.access.csv
+++ b/addons/crm/security/ir.model.access.csv
@@ -5,12 +5,14 @@ access_crm_segmentation,crm.segmentation,model_crm_segmentation,base.group_sale_
 access_crm_segmentation_line,crm.segmentation.line,model_crm_segmentation_line,base.group_sale_manager,1,1,1,1
 access_crm_case_channel_user,crm.case.channel user,model_crm_case_channel,base.group_sale_salesman,1,0,0,0
 access_crm_case_channel_manager,crm.case.channel manager,model_crm_case_channel,base.group_sale_manager,1,1,1,1
+access_crm_case_section,crm.case.section,model_crm_case_section,base.group_user,1,0,0,0
 access_crm_case_categ,crm.case.categ,model_crm_case_categ,base.group_sale_salesman,1,1,1,0
 access_crm_lead_manager,crm.lead.manager,model_crm_lead,base.group_sale_manager,1,1,1,1
 access_crm_phonecall_manager,crm.phonecall.manager,model_crm_phonecall,base.group_sale_manager,1,1,1,1
 access_crm_case_categ,crm.case.categ,model_crm_case_categ,base.group_user,1,0,0,0
 access_crm_lead,crm.lead,model_crm_lead,base.group_sale_salesman,1,1,1,0
 access_crm_phonecall,crm.phonecall,model_crm_phonecall,base.group_sale_salesman,1,1,1,0
+access_crm_case_section_user,crm.case.section.user,model_crm_case_section,base.group_sale_salesman,1,1,1,0
 access_crm_case_section_manager,crm.case.section.manager,model_crm_case_section,base.group_sale_manager,1,1,1,1
 access_crm_case_stage,crm.case.stage,model_crm_case_stage,,1,0,0,0
 access_crm_case_stage_manager,crm.case.stage,model_crm_case_stage,base.group_sale_manager,1,1,1,1