diff --git a/src/main/java/pw/yumc/MiaoScript/ScriptEngine.java b/src/main/java/pw/yumc/MiaoScript/ScriptEngine.java
index 8c95dca..0108422 100644
--- a/src/main/java/pw/yumc/MiaoScript/ScriptEngine.java
+++ b/src/main/java/pw/yumc/MiaoScript/ScriptEngine.java
@@ -17,18 +17,16 @@ public class ScriptEngine {
     private Object logger;
     private Base base;
     private MiaoScriptEngine engine;
-    private ScriptEngineManager manager;
 
     public ScriptEngine(String root, Object logger, Object instance) {
         this.root = root;
         this.logger = logger;
         this.base = new Base(instance);
-        this.manager = new ScriptEngineManager();
     }
 
     public synchronized MiaoScriptEngine createEngine() {
         if (this.engine == null) {
-            this.engine = new MiaoScriptEngine(manager, "nashorn");
+            this.engine = new MiaoScriptEngine(new ScriptEngineManager(), "nashorn");
             this.engine.put("base", this.base);
             this.engine.put("ScriptEngineContextHolder", this);
         }
diff --git a/src/main/resources/core/ployfill.js b/src/main/resources/core/ployfill.js
index 72700cc..19a25b4 100644
--- a/src/main/resources/core/ployfill.js
+++ b/src/main/resources/core/ployfill.js
@@ -9,7 +9,7 @@
         global.logger = logger;
         global.ScriptEngineStartTime = new Date().getTime()
         global.engineLoad = load;
-        global.noop = global.engineDisable = engineDisable = function () { };
+        global.noop = function () { };
         global.load = load = function __PreventGlobalLoadFunction__() { throw new Error('Internal engine system not allow use `load` function!'); }
         global.setGlobal = function (key, value, config) {
             if (config) {