diff --git a/tools/inventory.pl b/tools/inventory.pl
index 632968219d..b16238c2f1 100755
--- a/tools/inventory.pl
+++ b/tools/inventory.pl
@@ -151,8 +151,8 @@ my @errorloop;
 my $moddatecount = 0;
 if ( ($uploadbarcodes && length($uploadbarcodes) > 0) || ($barcodelist && length($barcodelist) > 0) ) {
     my $dbh = C4::Context->dbh;
-    my $date = dt_from_string( scalar $input->param('setdate') );
-    $date = output_pref ( { dt => $date, dateformat => 'iso' } );
+    my $date = $input->param('setdate');
+    my $date_dt = dt_from_string($date);
 
     my $strsth  = "select * from issues, items where items.itemnumber=issues.itemnumber and items.barcode =?";
     my $qonloan = $dbh->prepare($strsth);
@@ -209,7 +209,7 @@ if ( ($uploadbarcodes && length($uploadbarcodes) > 0) || ($barcodelist && length
             my $item = Koha::Items->find({barcode => $barcode});
             if ( $item ) {
                 # Modify date last seen for scanned items, remove lost status
-                $item->set({ itemlost => 0, datelastseen => $date })->store;
+                $item->set({ itemlost => 0, datelastseen => $date_dt })->store;
                 my $item_unblessed = $item->unblessed;
                 $moddatecount++;
                 unless ( $dont_checkin ) {
@@ -231,7 +231,7 @@ if ( ($uploadbarcodes && length($uploadbarcodes) > 0) || ($barcodelist && length
             }
         }
     }
-    $template->param( date => $date );
+    $template->param( date => output_pref ( { str => $date, dateformat => 'iso' } ) );
     $template->param( errorloop => \@errorloop ) if (@errorloop);
 }