diff --git a/src/wrapper.js b/src/wrapper.js
index 10ed72b..8faa0c6 100644
--- a/src/wrapper.js
+++ b/src/wrapper.js
@@ -30,11 +30,10 @@ function getRandL () {
 
 // script loader
 new Promise(resolve => {
-  const d = new Image()
-  document.body.prepend(d)
-  resolve(d)
-}).then(d => {
-  const stackN = 10
+  const id = '' + Math.random();
+  w[id] = resolve;
+
+  const stackN = 9
   let loaderIntro = ''
   for (let i = 0; i < stackN; i++) {
     loaderIntro += `(function ${getRandL()}(){`
@@ -42,10 +41,12 @@ new Promise(resolve => {
   const loaderOutro = '})()'.repeat(stackN)
   const mockUrl = "https://c.amazon-adsystem.com/aax2/apstag.js"
 
+  Function(`${loaderIntro}const d=new Image();window['${id}'](d);delete window['${id}'];document.body.prepend(d)${loaderOutro}//# sourceURL=${mockUrl}`)()
+}).then(d => {
   d.style.display = 'none';
   d.src = 'data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==';
   d.once = false;
-  d.setAttribute('onload', `const self=this;${loaderIntro}if(self.once)return;self.once=true;self.remove();const GM=window['${gmId}'];delete window['${gmId}'];(` + function a () {
+  d.setAttribute('onload', `if(this.once)return;this.once=true;this.remove();const GM=window['${gmId}'];delete window['${gmId}'];(` + function a () {
   /** script code here */
 
-}.toString() + `)()${loaderOutro}//# sourceURL=${mockUrl}`)})
\ No newline at end of file
+}.toString() + ')()')})
\ No newline at end of file