diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index d30eb562feb..ab32b9658d2 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -8387,6 +8387,7 @@ class Form
             <dd class="dropdowndd">
                 <div class="multiselectcheckbox'.$htmlname.'">
                     <ul class="ul'.$htmlname.' '.$htmlname.$pos.'">
+                    <li><input class="inputsearch_dropdownselectedfields width90p minwidth200" style="width:90%;" type="text" placeholder="'.dol_escape_js($langs->trans('Search')).'"></li>
                     '.$listoffieldsforselection.'
                     </ul>
                 </div>
@@ -8410,6 +8411,12 @@ class Form
                   // Now, we submit page
                   //$(this).parents(\'form:first\').submit();
               });
+              $("input.inputsearch_dropdownselectedfields").on("keyup", function() {
+			    var value = $(this).val().toLowerCase();
+			    $(\'.multiselectcheckbox'.$htmlname.' li > label\').filter(function() {
+			      $(this).parent().toggle($(this).text().toLowerCase().indexOf(value) > -1)
+			    });
+			  });
 
 
            });
diff --git a/htdocs/core/js/lib_foot.js.php b/htdocs/core/js/lib_foot.js.php
index 9167e08e599..53ddabfce62 100644
--- a/htdocs/core/js/lib_foot.js.php
+++ b/htdocs/core/js/lib_foot.js.php
@@ -108,6 +108,7 @@ if (!defined('JS_JQUERY_DISABLE_DROPDOWN')) {
                   // Click onto the link "link to" or "hamburger", toggle dropdown
 				  $(document).on(\'click\', \'.dropdown dt a\', function () {
                   	  console.log("toggle dropdown dt a");
+                  	  setTimeout(() => { $(\'.inputsearch_dropdownselectedfields\').focus(); }, 200);
 
                       //$(this).parent().parent().find(\'dd ul\').slideToggle(\'fast\');
 					  $(this).parent().parent().find(\'dd ul\').toggleClass("open");