diff --git a/C4/Overdues.pm b/C4/Overdues.pm
index d484c67b0f..faea77e0f3 100644
--- a/C4/Overdues.pm
+++ b/C4/Overdues.pm
@@ -545,7 +545,7 @@ sub UpdateFine {
     # - accumulate fines for other items
     # so we can update $itemnum fine taking in account fine caps
     while (my $overdue = $overdues->next) {
-        if ( $overdue->issue_id == $issue_id && $overdue->status eq 'UNRETURNED' ) {
+        if ( defined $overdue->issue_id && $overdue->issue_id == $issue_id && $overdue->status eq 'UNRETURNED' ) {
             if ($accountline) {
                 $debug and warn "Not a unique accountlines record for issue_id $issue_id";
                 #FIXME Should we still count this one in total_amount ??