diff --git a/project_forecast/models/project_forecast.py b/project_forecast/models/project_forecast.py
index 93d93d9..6c61e71 100755
--- a/project_forecast/models/project_forecast.py
+++ b/project_forecast/models/project_forecast.py
@@ -23,6 +23,13 @@ class PlanningShift(models.Model):
         ('project_required_if_task', "CHECK( (task_id IS NOT NULL AND project_id IS NOT NULL) OR (task_id IS NULL) )", "If the planning is linked to a task, the project must be set too."),
     ]
 
+    @api.model
+    def read_group(self, domain, fields, groupby, offset=0, limit=None, orderby=False, lazy=True):
+        if 'budgeted_hours' in fields:
+            fields.remove('budgeted_hours')
+        return super(PlanningShift, self).read_group(domain, fields, groupby, offset, limit, orderby, lazy)
+
+
     @api.depends('project_id', 'employee_id')
     def _compute_budgeted_hours(self):
         for slot in self:
diff --git a/project_forecast/views/planning_views.xml b/project_forecast/views/planning_views.xml
index 199e15c..9b7fce4 100755
--- a/project_forecast/views/planning_views.xml
+++ b/project_forecast/views/planning_views.xml
@@ -8,8 +8,9 @@
         <field name="inherit_id" ref="planning.planning_view_tree"/>
         <field name="arch" type="xml">
             <xpath expr="//field[@name='role_id']" position="after">
-                <field name="project_id" optional="hide"/>
-                <field name="task_id" optional="hide"/>
+                <field name="project_id"/> <!-- optional="hide" -->
+                <field name="task_id"/>
+                <field name="budgeted_hours"/>
             </xpath>
         </field>
     </record>