diff --git a/htdocs/core/class/extrafields.class.php b/htdocs/core/class/extrafields.class.php
index c821f6a1f34..7357755eb7e 100644
--- a/htdocs/core/class/extrafields.class.php
+++ b/htdocs/core/class/extrafields.class.php
@@ -1054,6 +1054,7 @@ class ExtraFields
 		elseif ($type == 'link')
 		{
 			$out='';
+			
 			$param_list=array_keys($param['options']);
 			// 0 : ObjectName
 			// 1 : classPath
@@ -1292,14 +1293,15 @@ class ExtraFields
 		elseif ($type == 'link')
 		{
 			$out='';
-			$param_list=array_keys($params['options']);
-			// 0 : ObjectName
-			// 1 : classPath
-			$InfoFieldList = explode(":", $param_list[0]);
-			dol_include_once($InfoFieldList[1]);
-			$object = new $InfoFieldList[0]($this->db);
+			// only if something to display (perf)
 			if ($value)
 			{
+				$param_list=array_keys($params['options']);
+				// 0 : ObjectName
+				// 1 : classPath
+				$InfoFieldList = explode(":", $param_list[0]);
+				dol_include_once($InfoFieldList[1]);
+				$object = new $InfoFieldList[0]($this->db);
 				$object->fetch($value);
 				$value=$object->getNomUrl(3);
 			}