diff --git a/addons/project/project.py b/addons/project/project.py
index c674034b367..e381e624c19 100644
--- a/addons/project/project.py
+++ b/addons/project/project.py
@@ -698,9 +698,12 @@ class task(osv.osv):
     def copy_data(self, cr, uid, id, default=None, context=None):
         if default is None:
             default = {}
+        current = self.browse(cr, uid, id, context=context)
         if not default.get('name'):
-            current = self.browse(cr, uid, id, context=context)
             default['name'] = _("%s (copy)") % current.name
+        if 'remaining_hours' not in default:
+            default['remaining_hours'] = current.planned_hours
+
         return super(task, self).copy_data(cr, uid, id, default, context)
 
     def _is_template(self, cr, uid, ids, field_name, arg, context=None):