diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/members/memberentrygen.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/members/memberentrygen.tt
index 6877ef453f..c12e44c388 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/members/memberentrygen.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/members/memberentrygen.tt
@@ -512,10 +512,12 @@ legend.collapsed i.fa.fa-caret-down::before {
                                                                 <li class="guarantor-details" data-borrowernumber="[% r.guarantor_id | $raw %]">
                                                                     <span class="label">Guarantor:</span>
                                                                     [% INCLUDE 'patron-title.inc' patron=r.guarantor hide_patron_infos_if_needed=1 %]
+                                                                    <input type="hidden" class="new_guarantor_id" name="new_guarantor_id" value="[% r.guarantor_id | $raw %]"/>
                                                                 </li>
                                                                 <li>
                                                                     <span class="label">Relationship:</span>
                                                                     <span>[% r.relationship | html %]</span>
+                                                                    <input type=hidden class="new_guarantor_relationship" name="new_guarantor_relationship" value="[% r.relationship | html %]" />
                                                                 </li>
 
                                                                 <li>