diff --git a/addons/mail/models/mail_activity.py b/addons/mail/models/mail_activity.py
index 2f53fe3fe72..68922cb332f 100644
--- a/addons/mail/models/mail_activity.py
+++ b/addons/mail/models/mail_activity.py
@@ -70,7 +70,7 @@ class MailActivity(models.Model):
     # owner
     res_id = fields.Integer('Related Document ID', index=True, required=True)
     res_model_id = fields.Many2one(
-        'ir.model', 'Related Document Model',
+        'ir.model', 'Document Model',
         index=True, ondelete='cascade', required=True)
     res_model = fields.Char(
         'Related Document Model',
@@ -299,13 +299,13 @@ class MailActivityMixin(models.AbstractModel):
     activity_state = fields.Selection([
         ('overdue', 'Overdue'),
         ('today', 'Today'),
-        ('planned', 'Planned')], string='State',
+        ('planned', 'Planned')], string='Activity State',
         compute='_compute_activity_state',
         groups="base.group_user",
         help='Status based on activities\nOverdue: Due date is already passed\n'
              'Today: Activity date is today\nPlanned: Future activities.')
     activity_user_id = fields.Many2one(
-        'res.users', 'Responsible',
+        'res.users', 'Responsible Person',
         related='activity_ids.user_id',
         search='_search_activity_user_id',
         groups="base.group_user")
diff --git a/addons/mass_mailing/wizard/mail_compose_message.py b/addons/mass_mailing/wizard/mail_compose_message.py
index 8708dd9a098..8f28f6b5244 100644
--- a/addons/mass_mailing/wizard/mail_compose_message.py
+++ b/addons/mass_mailing/wizard/mail_compose_message.py
@@ -10,7 +10,7 @@ class MailComposeMessage(models.TransientModel):
 
     mass_mailing_campaign_id = fields.Many2one('mail.mass_mailing.campaign', string='Mass Mailing Campaign')
     mass_mailing_id = fields.Many2one('mail.mass_mailing', string='Mass Mailing', ondelete='cascade')
-    mass_mailing_name = fields.Char(string='Mass Mailing')
+    mass_mailing_name = fields.Char(string='Mass Mailing Name')
     mailing_list_ids = fields.Many2many('mail.mass_mailing.list', string='Mailing List')
 
     @api.multi