diff --git a/ext/phar/phar_object.c b/ext/phar/phar_object.c
index 9f83fa991d4d..c6793417fbd1 100644
--- a/ext/phar/phar_object.c
+++ b/ext/phar/phar_object.c
@@ -2782,7 +2782,7 @@ PHP_METHOD(Phar, setAlias)
 	zend_hash_str_add_ptr(&(PHAR_G(phar_alias_map)), alias, alias_len, phar_obj->archive);
 
 	if (oldalias) {
-		efree(oldalias);
+		pefree(oldalias, phar_obj->archive->is_persistent);
 	}
 
 	RETURN_TRUE;