diff --git a/src/core/2.base.js b/src/core/2.base.js
index c5d540a06..f297ae095 100644
--- a/src/core/2.base.js
+++ b/src/core/2.base.js
@@ -640,7 +640,7 @@ export function isPromise(obj) {
 }
 
 export const deepClone = BI._.cloneDeep;
-export const deepExtend = BI._.deepExtend;
+export const deepExtend = BI._.merge;
 
 export function isDeepMatch(object, attrs) {
     const attrsKeys = keys(attrs), length = attrsKeys.length;