diff --git a/src/types/object.js b/src/types/object.js
index 3baee29..895d469 100644
--- a/src/types/object.js
+++ b/src/types/object.js
@@ -99,7 +99,7 @@ function defineClassStructMethods(target, info) {
 }
 
 /** @type number | null */
-export const _HydratingObject = null;
+export let _HydratingObject = null;
 
 export function createObject(info, gType) {
   const ParentClass = getParentClass(info) ?? Object;