diff --git a/t/db_dependent/Serials.t b/t/db_dependent/Serials.t
index ff6bed2826..d7a96f8b09 100755
--- a/t/db_dependent/Serials.t
+++ b/t/db_dependent/Serials.t
@@ -15,6 +15,7 @@ use C4::Bookseller;
 use C4::Biblio;
 use C4::Budgets;
 use Koha::DateUtils;
+use t::lib::Mocks;
 use t::lib::TestBuilder;
 use Test::More tests => 48;
 
@@ -190,6 +191,7 @@ subtest 'test_updateClaim' => sub {
     plan tests => 11;
 
     my $builder = t::lib::TestBuilder->new();
+    my $today = output_pref({ dt => dt_from_string, dateonly => 1 });
     # Given ... nothing much
     # When ... Then ...
     my $result_0 = C4::Serials::updateClaim(undef);
@@ -197,7 +199,7 @@ subtest 'test_updateClaim' => sub {
 
     # Given ... 3 serial. 2 of them updated.
     my $serialids_1   = [90980, 90981];
-    my $claimdate_1   = '2001/01/13'; # arbitrary date some time in the past.
+    my $claimdate_1   = dt_from_string('2001-01-13'); # arbitrary date some time in the past.
     my $claim_count_1 = 5;
 
     $builder->build({
@@ -220,17 +222,17 @@ subtest 'test_updateClaim' => sub {
     is($result_1, 2, 'Got the expected 2 from update claim with 2 serial ids');
 
     my @late_or_missing_issues_1_0 = C4::Serials::GetLateOrMissingIssues(undef, $serialids_1->[0]);
-    isnt($late_or_missing_issues_1_0[0]->{claimdate}, $claimdate_1, 'Got the expected first different claim date from update claim');
+    is($late_or_missing_issues_1_0[0]->{claimdate}, $today, 'Got the expected first different claim date from update claim');
     is($late_or_missing_issues_1_0[0]->{claims_count}, $claim_count_1+1, 'Got the expected first claim count from update claim');
     is($late_or_missing_issues_1_0[0]->{status}, 7, 'Got the expected first claim status from update claim');
 
     my @late_or_missing_issues_1_1 = C4::Serials::GetLateOrMissingIssues(undef, $serialids_1->[1]);
-    isnt($late_or_missing_issues_1_1[0]->{claimdate}, $claimdate_1, 'Got the expected second different claim date from update claim');
+    is($late_or_missing_issues_1_1[0]->{claimdate}, $today, 'Got the expected second different claim date from update claim');
     is($late_or_missing_issues_1_1[0]->{claims_count}, $claim_count_1+1, 'Got the expected second claim count from update claim');
     is($late_or_missing_issues_1_1[0]->{status}, 7, 'Got the expected second claim status from update claim');
 
     my @late_or_missing_issues_1_2 = C4::Serials::GetLateOrMissingIssues(undef, 90982);
-    is($late_or_missing_issues_1_2[0]->{claimdate}, '13/01/2001', 'Got the expected unchanged claim date from update claim');
+    is($late_or_missing_issues_1_2[0]->{claimdate}, output_pref({ dt => $claimdate_1, dateonly => 1}), 'Got the expected unchanged claim date from update claim');
     is($late_or_missing_issues_1_2[0]->{claims_count}, $claim_count_1, 'Got the expected unchanged claim count from update claim');
     is($late_or_missing_issues_1_2[0]->{status}, 3, 'Got the expected unchanged claim status from update claim');
 };