diff --git a/webpack/lib/audio-manager.js b/webpack/lib/audio-manager.js
index 01c0d53..7da9647 100644
--- a/webpack/lib/audio-manager.js
+++ b/webpack/lib/audio-manager.js
@@ -32,18 +32,17 @@ export default class AudioManager{
 
 		/* (7) Create websocket connection */
 		this.ws = new WebSocket('wss://ws.douscord.xdrm.io/audio/2');
-		let self = this;
 
 		/* (8) Manage websocket requests */
 		this._ws = {
 			stack: [],
-			send(_data){
-				if( self.ws.readyState !== 1 ) // not connected -> stack
-					return self._ws.stack.push(_data);
+			send: function(_data){
+				if( this.ws.readyState !== 1 ) // not connected -> stack
+					return this._ws.stack.push(_data);
 
 				console.warn(`send buffer[${_data.length}]`);
-				self.ws.send(_data);
-			},
+				this.ws.send(_data);
+			}.bind(this)
 		};
 
 		/* (9) Manage websocket message stack */
@@ -65,9 +64,9 @@ export default class AudioManager{
 			let fr = new FileReader();
 
 			fr.onload = function(){
-				let buf16 = new Int16Array(this.result);
-				self.receive(buf16).bind(self);
-			};
+				let buf16 = new Int16Array(fr.result);
+				this.receive(buf16).bind(this);
+			}.bind(this);
 
 			fr.readAsArrayBuffer(_msg.data);