diff --git a/input/management/commands/sendmails.py b/input/management/commands/sendmails.py
index b159639..4790531 100644
--- a/input/management/commands/sendmails.py
+++ b/input/management/commands/sendmails.py
@@ -124,7 +124,7 @@ class Command(BaseCommand):
     def surveymails_to_project(self):
         '''send survey link 4 weeks after end of project reached'''
         supported = Project.objects.filter(granted=True)\
-                                   .filter(granted_date__lt = date.today() - timedelta(days=28))\
+                                   .filter(end__lt = date.today() - timedelta(days=28))\
                                    .exclude(survey_mail_send=True)
         self.surveymails_to_object(supported, type='PRO', name='realname')
 
@@ -132,7 +132,7 @@ class Command(BaseCommand):
         '''send survey link 3 weeks after end of project reached'''
 
         supported = Travel.objects.filter(project__granted=True)\
-                                   .filter(project__granted_date__lt = date.today() - timedelta(days=21))\
+                                   .filter(project__end__lt = date.today() - timedelta(days=21))\
                                    .exclude(survey_mail_send=True)
         self.surveymails_to_object(supported, type='TRAV', name='request_url')