diff --git a/htdocs/core/class/extrafields.class.php b/htdocs/core/class/extrafields.class.php
index 9f34fa3a15f..4f9b0d06f16 100644
--- a/htdocs/core/class/extrafields.class.php
+++ b/htdocs/core/class/extrafields.class.php
@@ -1709,7 +1709,9 @@ class ExtraFields
 			$toprint = array();
 			if (is_array($value_arr)) {
 				foreach ($value_arr as $keyval => $valueval) {
-					$toprint[] = '<li class="select2-search-choice-dolibarr noborderoncategories" style="background: #bbb">'.$param['options'][$valueval].'</li>';
+					if (!empty($valueval)) {
+						$toprint[] = '<li class="select2-search-choice-dolibarr noborderoncategories" style="background: #bbb">'.$param['options'][$valueval].'</li>';
+					}
 				}
 			}
 			$value = '<div class="select2-container-multi-dolibarr" style="width: 90%;"><ul class="select2-choices-dolibarr">'.implode(' ', $toprint).'</ul></div>';