diff --git a/catalogue/itemsearch.pl b/catalogue/itemsearch.pl
index 975b96a70b..7caba9a0c3 100755
--- a/catalogue/itemsearch.pl
+++ b/catalogue/itemsearch.pl
@@ -130,7 +130,7 @@ if ( defined $format ) {
     foreach my $p (
         qw(homebranch holdingbranch location itype ccode issues datelastborrowed notforloan itemlost withdrawn damaged))
     {
-        if ( my @q = $cgi->multi_param($p) ) {
+        if ( my @q = $cgi->multi_param($p . "[]") ) {
             if ( $q[0] ne '' ) {
                 my $f = {
                     field => $p,
diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/catalogue/itemsearch.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/catalogue/itemsearch.tt
index 3463282c24..3bdbb520a5 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/catalogue/itemsearch.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/catalogue/itemsearch.tt
@@ -480,7 +480,10 @@
                     type: 'POST',
                     data: function ( d ) {
                         for (i in params) {
-                            d[params[i].name] = params[i].value;
+                            if (! d.hasOwnProperty(params[i].name) ) {
+                                d[params[i].name] = [];
+                            }
+                            d[params[i].name].push(params[i].value);
                         }
                         d.format = 'json';
                         d.columns = JSON.stringify( d.columns );