diff --git a/app/dao/jobs_dao.py b/app/dao/jobs_dao.py
index e87e61293..b10174b9f 100644
--- a/app/dao/jobs_dao.py
+++ b/app/dao/jobs_dao.py
@@ -184,6 +184,6 @@ def can_letter_job_be_cancelled(job):
     if count_cancellable_notifications != job.notification_count or not letter_can_be_cancelled(
         NOTIFICATION_CREATED, job.created_at
     ):
-        return False, "It's too late to cancel sending, these letters have already been sent."
+        return False, "It’s too late to cancel sending, these letters have already been sent."
 
     return True, None
diff --git a/tests/app/dao/test_jobs_dao.py b/tests/app/dao/test_jobs_dao.py
index 63b57fb96..5b77664bc 100644
--- a/tests/app/dao/test_jobs_dao.py
+++ b/tests/app/dao/test_jobs_dao.py
@@ -342,7 +342,7 @@ def test_can_letter_job_be_cancelled_returns_false_and_error_message_if_notifica
     create_notification(template=job.template, job=job, status='created')
     result, errors = can_letter_job_be_cancelled(job)
     assert not result
-    assert errors == "It's too late to cancel sending, these letters have already been sent."
+    assert errors == "It’s too late to cancel sending, these letters have already been sent."
 
 
 def test_can_letter_job_be_cancelled_returns_false_and_error_message_if_letters_already_sent_to_dvla(
@@ -355,7 +355,7 @@ def test_can_letter_job_be_cancelled_returns_false_and_error_message_if_letters_
     with freeze_time('2019-06-13 17:32'):
         result, errors = can_letter_job_be_cancelled(job)
     assert not result
-    assert errors == "It's too late to cancel sending, these letters have already been sent."
+    assert errors == "It’s too late to cancel sending, these letters have already been sent."
     assert letter.status == 'created'
     assert job.job_status == 'finished'