diff --git a/dist/utils/index.js b/dist/utils/index.js
index 6c78af71..71ddfc64 100644
--- a/dist/utils/index.js
+++ b/dist/utils/index.js
@@ -7,7 +7,7 @@ function isObj(x) {
   return x !== null && (type === 'object' || type === 'function');
 }
 
-export default {
+export {
   isObj,
   isDef
 };
diff --git a/packages/utils/index.js b/packages/utils/index.js
index 6c78af71..71ddfc64 100644
--- a/packages/utils/index.js
+++ b/packages/utils/index.js
@@ -7,7 +7,7 @@ function isObj(x) {
   return x !== null && (type === 'object' || type === 'function');
 }
 
-export default {
+export {
   isObj,
   isDef
 };