diff --git a/t/db_dependent/Letters.t b/t/db_dependent/Letters.t
index 59d52ad66c..5b7188d495 100644
--- a/t/db_dependent/Letters.t
+++ b/t/db_dependent/Letters.t
@@ -354,6 +354,9 @@ $bookseller->contacts->[0]->email('testemail@mydomain.com');
 C4::Bookseller::ModBookseller($bookseller);
 $bookseller = Koha::Acquisition::Bookseller->fetch({ id => $booksellerid });
 
+# Ensure that the preference 'LetterLog' is set to logging
+C4::Context->set_preference( 'LetterLog', 'on' );
+
 warning_is {
     $err = SendAlerts( 'claimacquisition', [ $ordernumber ], 'TESTACQCLAIM' ) }
     "Fake sendmail",