diff --git a/polynum_blackboard/management/commands/send-to-mycourse.py b/polynum_blackboard/management/commands/send-to-mycourse.py
index 327b47b..69f379e 100644
--- a/polynum_blackboard/management/commands/send-to-mycourse.py
+++ b/polynum_blackboard/management/commands/send-to-mycourse.py
@@ -27,9 +27,9 @@ class Command(BaseCommand):
     @transaction.commit_on_success
     def handle(self, *args, **options):
         logger = logging.getLogger(__name__)
-        bb_pushs = models.BlackBoardPush.objects.filter(sent=False)
+        bb_pushs = models.BlackBoardPush.objects.filter(sent=False, request__isnull=False)
         if options['delete']:
-            qs = models.BlackBoardPush.objects.filter(id__in=options['delete'].split(','), request__isnull=Falsoe)
+            qs = models.BlackBoardPush.objects.filter(id__in=options['delete'].split(','))
             for push in qs:
                 print ' - deleted push request %s for document %s' % (push.id, push.request.id)
             qs.delete()