diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/z3950_search.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/z3950_search.tt
index 4b7acc6314..723f8adfc5 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/z3950_search.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/z3950_search.tt
@@ -276,6 +276,7 @@
                         <input type="hidden" name="current_page" id="current_page" value="[% current_page | html %]" />
                         <input type="hidden" id="searchtitle" name="title" value="[% title | html %]" />
                         <input type="hidden" id="isbn" name="isbn" value="[% isbn | html %]" />
+                        <input type="hidden" id="issn" name="issn" value="[% issn | html %]" />
                         <input type="hidden" id="lccall" name="lccall" value="[% lccall | html %]" />
                         <input type="hidden" id="author" name="author" value="[% author | html %]" />
                         <input type="hidden" id="publicationyear" name="publicationyear" value="[% publicationyear | html %]" />
diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/cataloguing/z3950_search.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/cataloguing/z3950_search.tt
index 5e8066f86d..888eb99889 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/cataloguing/z3950_search.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/cataloguing/z3950_search.tt
@@ -221,6 +221,7 @@
                             <input type="hidden" name="current_page" id="current_page" value="[% current_page | html %]" />
                             <input type="hidden" id="title" name="title" value="[% title | html %]" />
                             <input type="hidden" id="isbn" name="isbn" value="[% isbn | html %]" />
+                            <input type="hidden" id="issn" name="issn" value="[% issn | html %]" />
                             <input type="hidden" id="lccall" name="lccall" value="[% lccall | html %]" />
                             <input type="hidden" id="controlnumber" name="controlnumber" value="[% controlnumber | html %]" />
                             <input type="hidden" id="srchany" name="srchany" value="[% srchany | html %]" />