diff --git a/addons/project_timesheet/project_timesheet.py b/addons/project_timesheet/project_timesheet.py
index 2780f71271f..e9e53b1a131 100644
--- a/addons/project_timesheet/project_timesheet.py
+++ b/addons/project_timesheet/project_timesheet.py
@@ -30,7 +30,7 @@ class project_project(osv.osv):
     _inherit = 'project.project'
 
     _columns = {
-        'timesheets' : fields.boolean('Timesheets',help = "If you check this field timesheets appears in kanban view")
+        'timesheets' : fields.boolean('Timesheets',help = "If you check this field timesheets appears in kanban view"),
     }
     _defaults = {
         'timesheets' : True,
@@ -56,6 +56,10 @@ class project_project(osv.osv):
             context = {}
         value = {}
         data_obj = self.pool.get('ir.model.data')
+        if context.get('btn'):
+            context.update({
+                'search_default_to_invoice':1,
+            })
         for project in self.browse(cr, uid, ids, context=context):
             # Get Timesheet views
             tree_view = data_obj.get_object_reference(cr, uid, 'project_timesheet', 'view_account_analytic_line_tree_inherit_account_id')
diff --git a/addons/project_timesheet/project_timesheet_view.xml b/addons/project_timesheet/project_timesheet_view.xml
index 11863c6507c..3801b0dce81 100644
--- a/addons/project_timesheet/project_timesheet_view.xml
+++ b/addons/project_timesheet/project_timesheet_view.xml
@@ -58,7 +58,7 @@
 			<div class="manager"><b><field name="amount_invoiced"/> <field name="currency_id"/></b></div>
 		    </div>
 		    <div class="sequence">
-			<button name="open_timesheets" class="oe_to_invoice_buttons" type="object">Invoice</button>
+			<button name="open_timesheets" class="oe_to_invoice_buttons" type="object" context="{'btn':'invoice'}">Invoice</button>
 		    </div>
 		</xpath>
             </field>