diff --git a/htdocs/core/class/commondocgenerator.class.php b/htdocs/core/class/commondocgenerator.class.php
index f3b1e7afc81..26debedc9a7 100644
--- a/htdocs/core/class/commondocgenerator.class.php
+++ b/htdocs/core/class/commondocgenerator.class.php
@@ -1296,7 +1296,7 @@ abstract class CommonDocGenerator
 		$html = '';
 		$fields = array();
 
-		if (is_array($extrafields->attributes[$object->table_element]['label'])) {
+		if (is_array($extrafields->attributes[$object->table_element]) && is_array($extrafields->attributes[$object->table_element]['label'])) {
 			foreach ($extrafields->attributes[$object->table_element]['label'] as $key => $label)
 			{
 				// Enable extrafield ?