diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/invoice.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/invoice.tt
index 1992975a5a..3872b7f29c 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/invoice.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/invoice.tt
@@ -61,10 +61,10 @@
                         <ol>
                             <li>
                                 [% IF readonly %]
-                                    <label for="shipmentdate">Invoice number:</label>
+                                    <label for="invoicenumber">Invoice number:</label>
                                     [% invoicenumber | html %]
                                 [% ELSE %]
-                                    <label for="shipmentdate" class="required">Invoice number:</label>
+                                    <label for="invoicenumber" class="required">Invoice number:</label>
                                     <input type="text" id="invoicenumber" name="invoicenumber" value="[% invoicenumber | html %]" class="required" required="required"/>
                                     <span class="required">Required</span>
                                 [% END %]