diff --git a/addons/project_caldav/project_caldav.py b/addons/project_caldav/project_caldav.py
index fb2d62a9684..40cf9a89ff2 100644
--- a/addons/project_caldav/project_caldav.py
+++ b/addons/project_caldav/project_caldav.py
@@ -22,7 +22,8 @@
 from osv import fields, osv
 from caldav import calendar
 from datetime import datetime
-
+from tools.translate import _
+from base_calendar import base_calendar
 from project.project import task as base_project_task
 
 class project_task(osv.osv):
@@ -45,6 +46,50 @@ class project_task(osv.osv):
         'state': 'draft',
     }
 
+
+    def open_task(self, cr, uid, ids, context=None):
+        """
+        Open Task Form for Project Task.
+        @param cr: the current row, from the database cursor,
+        @param uid: the current user’s ID for security checks,
+        @param ids: List of project task’s IDs
+        @param context: A standard dictionary for contextual values
+        @return: Dictionary value which open Project Task form.
+        """
+
+        if not context:
+            context = {}
+
+        data_obj = self.pool.get('ir.model.data')
+
+        value = {}
+
+        task_form_ids = data_obj._get_id(cr, uid, 'project', 'view_task_form2')
+        task_tree_ids = data_obj._get_id(cr, uid, 'project', 'view_task_tree2')
+        task_calendar_ids = data_obj._get_id(cr, uid, 'project', 'view_task_calendar')
+        
+        if task_form_ids:
+            task_form_id = data_obj.browse(cr, uid, task_form_ids, context=context).res_id
+        if task_tree_ids:
+            task_tree_id = data_obj.browse(cr, uid, task_tree_ids, context=context).res_id
+        if task_calendar_ids:
+            task_calendar_id = data_obj.browse(cr, uid, task_calendar_ids, context=context).res_id
+        for id in ids:
+            value = {
+                    'name': _('Tasks'),
+                    'view_type': 'form',
+                    'view_mode': 'form,tree',
+                    'res_model': 'project.task',
+                    'view_id': False,
+                    'views': [(task_form_id, 'form'), (task_tree_id, 'tree'), (task_calendar_id, 'calendar')],
+                    'type': 'ir.actions.act_window',
+                    'res_id': base_calendar.base_calendar_id2real_id(id),
+                    'nodestroy': True
+                    }
+
+        return value
+
+
     def import_cal(self, cr, uid, data, data_id=None, context=None):
         todo_obj = self.pool.get('basic.calendar.todo')
         vals = todo_obj.import_cal(cr, uid, data, context=context)
diff --git a/addons/project_caldav/project_caldav_view.xml b/addons/project_caldav/project_caldav_view.xml
index 259d336c398..56b3172cc06 100644
--- a/addons/project_caldav/project_caldav_view.xml
+++ b/addons/project_caldav/project_caldav_view.xml
@@ -70,7 +70,7 @@
                            <button string="Edit All"
                                help="Edit all Ourrences of recurrent Task"
                                attrs="{'invisible':[('rrule_type','in', ('none', False))]}"
-                               name="open_meeting" icon="gtk-edit"
+                               name="open_task" icon="gtk-edit"
                                type="object" />
                            <button string="Exclude range" groups="base.group_extended"
                                 help="Add Exception Rule"