diff --git a/build.py b/build.py
index 517d945eb..406914b99 100755
--- a/build.py
+++ b/build.py
@@ -62,12 +62,12 @@
 gradleBuildFile = settings.get('gradleBuildFile', 'mobile/build.gradle')
 
 # plugin wrapper code snippets. handled as macros, to ensure that
-# 1. indentation caused by the "function wrapper()" doesn't apply to the plugin code body
-# 2. the wrapper is formatted correctly for removal by the IITC Mobile android app
+# indentation caused by the wrapper IIFE doesn't apply to the plugin code body
 pluginWrapperStart = """
-function wrapper(plugin_info) {
+if (typeof window.plugin !== 'function') window.plugin = function() {};
+(function wrapper (plugin_info){
 // ensure plugin framework is there, even if iitc is not yet loaded
-if(typeof window.plugin !== 'function') window.plugin = function() {};
+if (typeof window.plugin !== 'function') window.plugin = function() {};
 
 //PLUGIN AUTHORS: writing a plugin outside of the IITC build environment? if so, delete these lines!!
 //(leaving them in place might break the 'About IITC' page or break update checks)
@@ -82,17 +82,12 @@
 
 pluginWrapperEnd = """
 setup.info = plugin_info; //add the script info data to the function as a property
-if(!window.bootPlugins) window.bootPlugins = [];
+if (!window.bootPlugins) window.bootPlugins = [];
 window.bootPlugins.push(setup);
-// if IITC has already booted, immediately run the 'setup' function
-if(window.iitcLoaded && typeof setup === 'function') setup();
-} // wrapper end
-// inject code into site context
-var script = document.createElement('script');
-var info = {};
-if (typeof GM_info !== 'undefined' && GM_info && GM_info.script) info.script = { version: GM_info.script.version, name: GM_info.script.name, description: GM_info.script.description };
-script.appendChild(document.createTextNode('('+ wrapper +')('+JSON.stringify(info)+');'));
-(document.body || document.head || document.documentElement).appendChild(script);
+if (window.iitcLoaded && typeof setup === 'function') setup();
+})({ script: typeof GM_info !== 'undefined' && GM_info.script && {
+  version: GM_info.script.version, name: GM_info.script.name, description: GM_info.script.description
+}})// wrapper end
 
 """
 
diff --git a/main.js b/main.js
index 9b11e97f2..67ad2783f 100644
--- a/main.js
+++ b/main.js
@@ -95,13 +95,9 @@ document.body.innerHTML = ''
   // avoid error by stock JS
   + '<div id="play_button"></div>';
 
-// putting everything in a wrapper function that in turn is placed in a
-// script tag on the website allows us to execute in the site’s context
-// instead of in the Greasemonkey/Extension/etc. context.
-function wrapper(info) {
-// a cut-down version of GM_info is passed as a parameter to the script
-// (not the full GM_info - it contains the ENTIRE script source!)
-window.script_info = info;
+
+// anonymous function wrapper for the code - any variables/functions not placed into 'window' will be private
+(function(info){
 
 
 
@@ -202,17 +198,21 @@ window.overlayStatus = {};
 
 // plugin framework. Plugins may load earlier than iitc, so don’t
 // overwrite data
-if(typeof window.plugin !== 'function') window.plugin = function() {};
+if (typeof window.plugin !== 'function') window.plugin = function() {};
+
+// (not saving the full GM_info - it contains the ENTIRE script source!)
+window.script_info = info;
+if (typeof GM_info !== 'undefined') {
+  info.script = {
+    version: GM_info.script.version,
+    name: GM_info.script.name,
+    description: GM_info.script.description,
+  };
+}
 
 
 @@INJECTCODE@@
 
 
-} // end of wrapper
-
-// inject code into site context
-var script = document.createElement('script');
-var info = { buildName: '@@BUILDNAME@@', dateTimeVersion: '@@DATETIMEVERSION@@' };
-if (this.GM_info && this.GM_info.script) info.script = { version: GM_info.script.version, name: GM_info.script.name, description: GM_info.script.description };
-script.appendChild(document.createTextNode('('+ wrapper +')('+JSON.stringify(info)+');'));
-(document.body || document.head || document.documentElement).appendChild(script);
+})({ buildName: '@@BUILDNAME@@', dateTimeVersion: '@@DATETIMEVERSION@@' });
+// end of wrapper
diff --git a/mobile/app/src/main/java/org/exarhteam/iitc_mobile/IITC_FileManager.java b/mobile/app/src/main/java/org/exarhteam/iitc_mobile/IITC_FileManager.java
index 4db767efe..cb3e576f7 100644
--- a/mobile/app/src/main/java/org/exarhteam/iitc_mobile/IITC_FileManager.java
+++ b/mobile/app/src/main/java/org/exarhteam/iitc_mobile/IITC_FileManager.java
@@ -46,10 +46,6 @@
 public class IITC_FileManager {
     private static final WebResourceResponse EMPTY =
             new WebResourceResponse("text/plain", "UTF-8", new ByteArrayInputStream("".getBytes()));
-    private static final String WRAPPER_NEW = "wrapper(info);";
-    private static final String WRAPPER_OLD =
-            "script.appendChild(document.createTextNode('('+ wrapper +')('+JSON.stringify(info)+');'));\n"
-                    + "(document.body || document.head || document.documentElement).appendChild(script);";
 
     // update interval is 2 days by default
     private long mUpdateInterval = 1000 * 60 * 60 * 24 * 7;
@@ -213,9 +209,7 @@ private InputStream prepareUserScript(final InputStream stream) {
         final HashMap<String, String> info = getScriptInfo(content);
 
         final JSONObject jObject = new JSONObject(info);
-        final String gmInfo = "var GM_info={\"script\":" + jObject.toString() + "}";
-
-        content = content.replace(WRAPPER_OLD, WRAPPER_NEW);
+        final String gmInfo = "var GM_info = { \"script\":" + jObject.toString() + " };";
 
         return new ByteArrayInputStream((gmInfo + content).getBytes());
     }