diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/invoice-files.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/invoice-files.tt
index bc1c864f7c..57e7c26d1a 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/invoice-files.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/invoice-files.tt
@@ -139,7 +139,7 @@
                 "dom": "t"
             }));
             $(".delete_file").click(function(){
-                return ( confirm( _("Are you sure you want to delete this file ?") ) );
+                return ( confirm( _("Are you sure you want to delete this file?") ) );
             });
         });
     </script>