diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index f67471ee76e..892fd02fcdb 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -786,7 +786,7 @@ abstract class CommonObject
 	public $extraparams = array();
 
 	/**
-	 * @var array<string,string[]|array{parent:string,parentkey:string}>	List of child tables. To test if we can delete object.
+	 * @var string[]|array<string,string[]|array{parent:string,parentkey:string}>	List of child tables. To test if we can delete object.
 	 */
 	protected $childtables = array();