diff --git a/welco/sources/mail/forms.py b/welco/sources/mail/forms.py
index 7b5da7d..f550445 100644
--- a/welco/sources/mail/forms.py
+++ b/welco/sources/mail/forms.py
@@ -21,7 +21,7 @@ from django.conf import settings
 class MailQualificationForm(forms.Form):
     post_date = forms.DateTimeField(label=_('Post Date (*)'), required=False)
     registered_mail_number = forms.CharField(label=_('Registered Mail Number'), required=False)
-    subject = forms.CharField(label='Subject', required=False, widget=forms.HiddenInput)
+    subject = forms.CharField(label=_('Subject'), required=False, widget=forms.HiddenInput)
 
     def __init__(self, *args, **kwargs):
         super(MailQualificationForm, self).__init__(*args, **kwargs)