diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index 54eeffdc4b6..a632a29b0f3 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -5835,9 +5835,11 @@ abstract class CommonObject
 				    jQuery(document).ready(function() {
 				    	function showOptions(child_list, parent_list)
 				    	{
-				    		var val = $("select[name=\"options_"+parent_list+"\"]").val();
+				    		var val = $("select[name="+parent_list+"]").val();
+
 				    		var parentVal = parent_list + ":" + val;
 							if(val > 0) {
+
 					    		$("select[name=\""+child_list+"\"] option[parent]").hide();
 					    		$("select[name=\""+child_list+"\"] option[parent=\""+parentVal+"\"]").show();
 							} else {
diff --git a/htdocs/core/tpl/extrafields_view.tpl.php b/htdocs/core/tpl/extrafields_view.tpl.php
index 3559df44c9c..e7abadac599 100644
--- a/htdocs/core/tpl/extrafields_view.tpl.php
+++ b/htdocs/core/tpl/extrafields_view.tpl.php
@@ -151,7 +151,7 @@ if (empty($reshook) && ! empty($extrafields->attributes[$object->table_element][
 				    jQuery(document).ready(function() {
 				    	function showOptions(child_list, parent_list)
 				    	{
-				    		var val = $("select[name=\"options_"+parent_list+"\"]").val();
+				    		var val = $("select[name="+parent_list+"]").val();
 				    		var parentVal = parent_list + ":" + val;
 							if(val > 0) {
 					    		$("select[name=\""+child_list+"\"] option[parent]").hide();