diff --git a/app/celery/nightly_tasks.py b/app/celery/nightly_tasks.py
index ca48955f0..77ca1debb 100644
--- a/app/celery/nightly_tasks.py
+++ b/app/celery/nightly_tasks.py
@@ -266,11 +266,6 @@ def get_letter_notifications_still_sending_when_they_shouldnt_be():
         func.date(Notification.sent_at) <= expected_sent_date
     )
 
-    if today.isoweekday() in {2, 4}:  # on tue, thu, we only care about first class letters
-        q = q.filter(
-            Notification.postage == 'first'
-        )
-
     return q.count(), expected_sent_date
 
 
diff --git a/tests/app/celery/test_nightly_tasks.py b/tests/app/celery/test_nightly_tasks.py
index 30e1f583c..9a7bf613c 100644
--- a/tests/app/celery/test_nightly_tasks.py
+++ b/tests/app/celery/test_nightly_tasks.py
@@ -371,11 +371,12 @@ def test_get_letter_notifications_still_sending_when_they_shouldnt_finds_thursda
 ):
     thursday = datetime(2018, 1, 11, 13, 30)
     yesterday = datetime(2018, 1, 14, 13, 30)
+    create_notification(template=sample_letter_template, status='sending', sent_at=thursday, postage='first')
     create_notification(template=sample_letter_template, status='sending', sent_at=thursday, postage='second')
     create_notification(template=sample_letter_template, status='sending', sent_at=yesterday, postage='second')
 
     count, expected_sent_date = get_letter_notifications_still_sending_when_they_shouldnt_be()
-    assert count == 1
+    assert count == 2
     assert expected_sent_date == date(2018, 1, 11)
 
 
@@ -386,12 +387,11 @@ def test_get_letter_notifications_still_sending_when_they_shouldnt_finds_friday_
     friday = datetime(2018, 1, 12, 13, 30)
     yesterday = datetime(2018, 1, 14, 13, 30)
     create_notification(template=sample_letter_template, status='sending', sent_at=friday, postage='first')
-    create_notification(template=sample_letter_template, status='sending', sent_at=yesterday, postage='first')
-    # doesn't get reported because it's second class, and it's tuesday today
     create_notification(template=sample_letter_template, status='sending', sent_at=friday, postage='second')
+    create_notification(template=sample_letter_template, status='sending', sent_at=yesterday, postage='first')
 
     count, expected_sent_date = get_letter_notifications_still_sending_when_they_shouldnt_be()
-    assert count == 1
+    assert count == 2
     assert expected_sent_date == date(2018, 1, 12)