diff --git a/C4/Letters.pm b/C4/Letters.pm
index a02c0d51a9..f3cabc2856 100644
--- a/C4/Letters.pm
+++ b/C4/Letters.pm
@@ -785,7 +785,7 @@ sub _parseletter_sth {
     ($table eq 'debits'       )    ? "SELECT * FROM accountlines WHERE   accountlines_id = ?"                         :
     ($table eq 'items'        )    ? "SELECT * FROM $table WHERE     itemnumber = ?"                                  :
     ($table eq 'issues'       )    ? "SELECT * FROM $table WHERE     itemnumber = ?"                                  :
-    ($table eq 'old_issues'   )    ? "SELECT * FROM $table WHERE     itemnumber = ? ORDER BY timestamp DESC LIMIT 1"  :
+    ($table eq 'old_issues'   )    ? "SELECT * FROM $table WHERE     issue_id = ?"  :
     ($table eq 'reserves'     )    ? "SELECT * FROM $table WHERE borrowernumber = ? and biblionumber = ?"             :
     ($table eq 'borrowers'    )    ? "SELECT * FROM $table WHERE borrowernumber = ?"                                  :
     ($table eq 'branches'     )    ? "SELECT * FROM $table WHERE     branchcode = ?"                                  :
@@ -1757,7 +1757,7 @@ sub _get_tt_params {
             module   => 'Koha::Old::Checkouts',
             singular => 'old_checkout',
             plural   => 'old_checkouts',
-            fk       => 'itemnumber',
+            pk       => 'issue_id',
         },
         overdues => {
             module   => 'Koha::Checkouts',
diff --git a/members/printslip.pl b/members/printslip.pl
index 1bb11f68be..368d84cc7f 100755
--- a/members/printslip.pl
+++ b/members/printslip.pl
@@ -71,11 +71,11 @@ if ( $print eq 'checkinslip' ) {
     my $checkinslip_branch = $session->param('branch') ? $session->param('branch') : $branch;
 
     # get today's checkins
-    my @itemnumbers = $patron->old_checkouts->search( { branchcode => $checkinslip_branch } )
-      ->filter_by_todays_checkins->get_column('itemnumber');
+    my @issue_ids = $patron->old_checkouts->search( { branchcode => $checkinslip_branch } )
+      ->filter_by_todays_checkins->get_column('issue_id');
 
     my %loops = (
-        old_issues => \@itemnumbers,
+        old_issues => \@issue_ids,
     );
 
     my $letter = C4::Letters::GetPreparedLetter(