diff --git a/htdocs/core/tpl/extrafields_list_print_fields.tpl.php b/htdocs/core/tpl/extrafields_list_print_fields.tpl.php
index 0d2949b4e24..85dd111bf55 100644
--- a/htdocs/core/tpl/extrafields_list_print_fields.tpl.php
+++ b/htdocs/core/tpl/extrafields_list_print_fields.tpl.php
@@ -60,7 +60,7 @@ if (!empty($extrafieldsobjectkey))	// $extrafieldsobject is the $object->table_e
                         // we keep position for the first line
                         $totalarray['totalizable'][$key]['pos'] = $totalarray['nbfield'];
                     }
-                    $totalarray['totalizable'][$key]['total'] += $obj->$tmpkey;
+	                if(is_numeric($obj->$tmpkey)) $totalarray['totalizable'][$key]['total'] += $obj->$tmpkey;
                 }
 				if (!empty($val['isameasure']))
 				{