diff --git a/.travis.yml b/.travis.yml
index 6f3fad1b..a6e57f87 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,7 +11,6 @@ install:
   - npm install
 script:
   - npm run build
-  - export NODE_ENV=production && node_modules/mocha/bin/_mocha --ui exports --colors 'test/**/*.js'
   - npm test
 after_success:
   - npm run coverage
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 44aae625..b6410b9b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## v4.8.1
+
+1. 修复低版本 NodeJS 报错问题
+
 ## v4.8.0
 
 1. 过滤器支持在运行时注入 [#4](https://github.com/aui/art-template-loader/issues/4)
diff --git a/lib/compile/adapter/extend.js b/lib/compile/adapter/extend.js
index ed73ef61..ce66521e 100644
--- a/lib/compile/adapter/extend.js
+++ b/lib/compile/adapter/extend.js
@@ -7,7 +7,7 @@ var toType = function toType(value) {
 };
 
 /**
- * 继承
+ * 快速继承默认配置
  * @param   {Object}    options
  * @param   {?Object}   defaults
  * @return  {Object}
@@ -24,7 +24,9 @@ var extend = function extend(target, defaults) {
 
     if (object) {
         for (var index in target) {
-            object[index] = extend(target[index], object[index]);
+            if (target.hasOwnProperty(index)) {
+                object[index] = extend(target[index], object[index]);
+            }
         }
         return object;
     } else {
diff --git a/lib/template-web.js b/lib/template-web.js
index fc8c431f..f8625577 100644
--- a/lib/template-web.js
+++ b/lib/template-web.js
@@ -1,3 +1,3 @@
-/*! art-template@4.8.0 | https://github.com/aui/art-template */
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\ No newline at end of file
diff --git a/package.json b/package.json
index 153bda5e..994fc164 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "art-template",
   "description": "JavaScript Template Engine",
   "homepage": "http://aui.github.com/art-template/",
-  "version": "4.8.0",
+  "version": "4.8.1",
   "keywords": [
     "template"
   ],
diff --git a/src/compile/adapter/extend.js b/src/compile/adapter/extend.js
index 3f43a2dc..321562e5 100644
--- a/src/compile/adapter/extend.js
+++ b/src/compile/adapter/extend.js
@@ -6,7 +6,7 @@ const toType = value => {
 
 
 /**
- * 继承
+ * 快速继承默认配置
  * @param   {Object}    options
  * @param   {?Object}   defaults
  * @return  {Object}
@@ -23,7 +23,9 @@ const extend = function (target, defaults) {
 
     if (object) {
         for (let index in target) {
-            object[index] = extend(target[index], object[index]);
+            if (target.hasOwnProperty(index)) {
+                object[index] = extend(target[index], object[index]);
+            }
         }
         return object;
     } else {
@@ -31,5 +33,4 @@ const extend = function (target, defaults) {
     }
 };
 
-
 module.exports = extend;
\ No newline at end of file
diff --git a/test/compile/index.js b/test/compile/index.js
index aaf97a16..4df389a2 100644
--- a/test/compile/index.js
+++ b/test/compile/index.js
@@ -237,6 +237,7 @@ module.exports = {
             test(`{{time * 1000 | dateFormat 'yyyy-MM-dd'}}`, {
                 time: 1491566794
             }, `2017-04-07`, options);
+            test(`{{3.14 | parseInt}}`, {}, `3`, options);
             test(`{{time | dateFormat:'yyyy-MM-dd'}}`, {
                 time: 1491566794863
             }, `2017-04-07`, options); // ... v3 compat ...