diff --git a/addons/payment/models/payment_acquirer.py b/addons/payment/models/payment_acquirer.py
index 0bbf0e27f1e..57da5f743e3 100644
--- a/addons/payment/models/payment_acquirer.py
+++ b/addons/payment/models/payment_acquirer.py
@@ -429,7 +429,7 @@ class PaymentTransaction(models.Model):
     # duplicate partner / transaction data to store the values at transaction time
     partner_id = fields.Many2one('res.partner', 'Partner', track_visibility='onchange')
     partner_name = fields.Char('Partner Name')
-    partner_lang = fields.Selection(_lang_get, 'Language', default='en_US')
+    partner_lang = fields.Selection(_lang_get, 'Language', default=lambda self: self.env.lang)
     partner_email = fields.Char('Email')
     partner_zip = fields.Char('Zip')
     partner_address = fields.Char('Address')
diff --git a/doc/cla/individual/daramousk.md b/doc/cla/individual/daramousk.md
new file mode 100644
index 00000000000..6a38655a8bf
--- /dev/null
+++ b/doc/cla/individual/daramousk.md
@@ -0,0 +1,11 @@
+Greece, 2017-01-22
+
+I hereby agree to the terms of the Odoo Individual Contributor License
+Agreement v1.0.
+
+I declare that I am authorized and able to make this agreement and sign this
+declaration.
+
+Signed,
+
+George Daramouskas george.daramouskas@gmail.com https://github.com/daramousk
\ No newline at end of file