diff --git a/addons/project/project.py b/addons/project/project.py
index debeefa9f1f..080e72f7678 100644
--- a/addons/project/project.py
+++ b/addons/project/project.py
@@ -898,18 +898,23 @@ class task(base_stage, osv.osv):
     def fields_view_get(self, cr, uid, view_id=None, view_type='form', context=None, toolbar=False, submenu=False):
         users_obj = self.pool.get('res.users')
         if context is None: context = {}
-        # read uom as admin to avoid access rights issues, e.g. for portal/share users,
-        # this should be safe (no context passed to avoid side-effects)
-        obj_tm = users_obj.browse(cr, SUPERUSER_ID, uid, context=context).company_id.project_time_mode_id
-        tm = obj_tm and obj_tm.name or 'Hours'
 
         res = super(task, self).fields_view_get(cr, uid, view_id, view_type, context, toolbar, submenu=submenu)
 
-        if tm in ['Hours','Hour']:
+        # read uom as admin to avoid access rights issues, e.g. for portal/share users,
+        # this should be safe (no context passed to avoid side-effects)
+        obj_tm = users_obj.browse(cr, SUPERUSER_ID, uid, context=context).company_id.project_time_mode_id
+        try:
+            # using get_object to get translation value
+            uom_hour = self.pool['ir.model.data'].get_object(cr, uid, 'product', 'product_uom_hour', context=context)
+        except ValueError:
+            uom_hour = False
+        if not obj_tm or not uom_hour or obj_tm.id == uom_hour.id:
             return res
 
         eview = etree.fromstring(res['arch'])
 
+        # if the project_time_mode_id is not in hours (so in days), display it as a float field
         def _check_rec(eview):
             if eview.attrib.get('widget','') == 'float_time':
                 eview.set('widget','float')
@@ -921,9 +926,13 @@ class task(base_stage, osv.osv):
 
         res['arch'] = etree.tostring(eview)
 
+        # replace reference of 'Hours' to 'Day(s)'
         for f in res['fields']:
+            # TODO this NOT work in different language than english
+            # the field 'Initially Planned Hours' should be replaced by 'Initially Planned Days'
+            # but string 'Initially Planned Days' is not available in translation
             if 'Hours' in res['fields'][f]['string']:
-                res['fields'][f]['string'] = res['fields'][f]['string'].replace('Hours',tm)
+                res['fields'][f]['string'] = res['fields'][f]['string'].replace('Hours', obj_tm.name)
         return res
 
     # ----------------------------------------