diff --git a/addons/mrp_operations/mrp_operations.py b/addons/mrp_operations/mrp_operations.py
index 885a406fe52..eafa078f226 100755
--- a/addons/mrp_operations/mrp_operations.py
+++ b/addons/mrp_operations/mrp_operations.py
@@ -44,7 +44,7 @@ class mrp_production_workcenter_line(osv.osv):
     _description = 'Production workcenters used'
     _columns = {
        'state': fields.selection([('draft','Draft'),('startworking', 'In Progress'),('pause','Pause'),('cancel','Canceled'),('done','Finished')],'Status', readonly=True),
-       'date_planned': fields.related('production_id', 'date_planned', string='Date Planned', type="datetime"),
+       'date_planned': fields.related('production_id', 'date_planned', type='datetime', string='Date Planned'),
        'date_start': fields.datetime('Start Date'),
        'date_finnished': fields.datetime('End Date'),
        'delay': fields.char('Delay',size=128,help="This is delay between operation start and stop in this workcenter",readonly=True),
diff --git a/addons/mrp_operations/mrp_operations_view.xml b/addons/mrp_operations/mrp_operations_view.xml
index 2b1b55c36f4..1a84e3cfcf8 100755
--- a/addons/mrp_operations/mrp_operations_view.xml
+++ b/addons/mrp_operations/mrp_operations_view.xml
@@ -60,7 +60,7 @@
         <field name="model">mrp.production.workcenter.line</field>
         <field name="type">gantt</field>
         <field name="arch" type="xml">
-            <gantt type="gantt" color="workcenter_id" date_delay="hour" date_start="date_planned" string="Operations">
+            <gantt color="workcenter_id" date_delay="hour" date_start="date_planned" string="Operations">
                 <level object="product.product" link="product" domain="[]">
                     <field name="production_id"/>
                 </level>