diff --git a/docs/upgrades/upgrade_7.10.2-7.10.3.pl b/docs/upgrades/upgrade_7.10.2-7.10.3.pl
index e91620252..f4711a6b9 100644
--- a/docs/upgrades/upgrade_7.10.2-7.10.3.pl
+++ b/docs/upgrades/upgrade_7.10.2-7.10.3.pl
@@ -49,6 +49,7 @@ select messageId, inbox.userId
     where users.userId IS NULL
 EOSQL
     $sth->execute([]);
+    use WebGUI::Inbox;
     my $inbox = WebGUI::Inbox->new($session);
     while (my ($messageId, $userId) = $sth->array) {
         my $message = $inbox->getMessage($messageId, $userId);