diff --git a/core/metamodel.class.php b/core/metamodel.class.php
index b61703616..722675e2c 100644
--- a/core/metamodel.class.php
+++ b/core/metamodel.class.php
@@ -599,7 +599,7 @@ abstract class MetaModel
 	 * @since 2.6.1 N°1918 (sous les pavés, la plage) initialize in 'root_class' property the class that has the first
 	 *         definition of the rule in the hierarchy
 	 */
-	final private static function SetUniquenessRuleRootClass($sRootClass, $sRuleId)
+	private static function SetUniquenessRuleRootClass($sRootClass, $sRuleId)
 	{
 		foreach (self::EnumChildClasses($sRootClass, ENUM_CHILD_CLASSES_ALL) as $sClass)
 		{