diff --git a/cataloguing/addbooks.pl b/cataloguing/addbooks.pl
index 8302141431..53ab86b39c 100755
--- a/cataloguing/addbooks.pl
+++ b/cataloguing/addbooks.pl
@@ -38,7 +38,6 @@ use Koha::BiblioFrameworks;
 use Koha::SearchEngine::Search;
 use Koha::SearchEngine::QueryBuilder;
 use Koha::Z3950Servers;
-use Business::ISBN;
 
 my $input = CGI->new;