diff --git a/node_modules/lamejs/src/js/BitStream.js b/node_modules/lamejs/src/js/BitStream.js
index dd9d69f..054941f 100644
--- a/node_modules/lamejs/src/js/BitStream.js
+++ b/node_modules/lamejs/src/js/BitStream.js
@@ -30,6 +30,7 @@ BitStream.NEQ = function (a, b) {
 };
 
 function BitStream() {
+    var Lame = require('./Lame.js');
     var self = this;
     var CRC16_POLYNOMIAL = 0x8005;
 
diff --git a/node_modules/lamejs/src/js/Encoder.js b/node_modules/lamejs/src/js/Encoder.js
index 4fea74e..ad3b467 100644
--- a/node_modules/lamejs/src/js/Encoder.js
+++ b/node_modules/lamejs/src/js/Encoder.js
@@ -109,7 +109,7 @@ Encoder.fircoef = [-0.0207887 * 5, -0.0378413 * 5,
 function Encoder() {
     var NewMDCT = require('./NewMDCT.js');
     var III_psy_ratio = require('./III_psy_ratio.js');
-
+    var MPEGMode = require('./MPEGMode.js');
     var FFTOFFSET = Encoder.FFTOFFSET;
     var MPG_MD_MS_LR = Encoder.MPG_MD_MS_LR;
     //BitStream bs;
diff --git a/node_modules/lamejs/src/js/Lame.js b/node_modules/lamejs/src/js/Lame.js
index d2dc7c0..b90bdd6 100644
--- a/node_modules/lamejs/src/js/Lame.js
+++ b/node_modules/lamejs/src/js/Lame.js
@@ -26,6 +26,7 @@ var Tables = require('./Tables.js');
 var Encoder = require('./Encoder.js');
 
 function Lame() {
+    var MPEGMode = require('./MPEGMode.js');
     var self = this;
     var LAME_MAXALBUMART = (128 * 1024);
 
diff --git a/node_modules/lamejs/src/js/Presets.js b/node_modules/lamejs/src/js/Presets.js
index a3de3c6..dd329a6 100644
--- a/node_modules/lamejs/src/js/Presets.js
+++ b/node_modules/lamejs/src/js/Presets.js
@@ -15,6 +15,7 @@ var new_int_n = common.new_int_n;
 var assert = common.assert;
 
 function Presets() {
+    var Lame = require('./Lame.js');
     function VBRPresets(qual, comp, compS,
                         y, shThreshold, shThresholdS,
                         adj, adjShort, lower,
diff --git a/node_modules/lamejs/src/js/PsyModel.js b/node_modules/lamejs/src/js/PsyModel.js
index e440280..533ca4d 100644
--- a/node_modules/lamejs/src/js/PsyModel.js
+++ b/node_modules/lamejs/src/js/PsyModel.js
@@ -159,7 +159,7 @@ var FFT = require("./FFT.js");
 var Encoder = require("./Encoder.js");
 
 function PsyModel() {
-
+    var MPEGMode = require('./MPEGMode.js');
     var fft = new FFT();
 
     var LOG10 = 2.30258509299404568402;
diff --git a/node_modules/lamejs/src/js/QuantizePVT.js b/node_modules/lamejs/src/js/QuantizePVT.js
index ef69bef..b849a58 100644
--- a/node_modules/lamejs/src/js/QuantizePVT.js
+++ b/node_modules/lamejs/src/js/QuantizePVT.js
@@ -50,7 +50,7 @@ QuantizePVT.LARGE_BITS = 100000;
 QuantizePVT.IXMAX_VAL = 8206;
 
 function QuantizePVT() {
-
+    var BitStream = require('./BitStream.js');
     var tak = null;
     var rv = null;
     var psy = null;