diff --git a/src/js/math.js b/src/js/math.js
index f8ad6b1fe6..d615f29a26 100644
--- a/src/js/math.js
+++ b/src/js/math.js
@@ -16,7 +16,6 @@ define kRandomNumberStart = 2;
 var GlobalFloat64Array = global.Float64Array;
 var GlobalMath = global.Math;
 var GlobalObject = global.Object;
-var InternalArray = utils.InternalArray;
 var NaN = %GetRootNaN();
 var nextRandomIndex = 0;
 var randomNumbers = UNDEFINED;
diff --git a/src/js/string.js b/src/js/string.js
index badb2b4aeb..249b99d48a 100644
--- a/src/js/string.js
+++ b/src/js/string.js
@@ -13,8 +13,6 @@ var ArrayIndexOf;
 var ArrayJoin;
 var GlobalRegExp = global.RegExp;
 var GlobalString = global.String;
-var InternalArray = utils.InternalArray;
-var InternalPackedArray = utils.InternalPackedArray;
 var IsRegExp;
 var MakeRangeError;
 var MakeTypeError;
diff --git a/src/js/v8natives.js b/src/js/v8natives.js
index 44be941976..5d14029862 100644
--- a/src/js/v8natives.js
+++ b/src/js/v8natives.js
@@ -12,7 +12,6 @@
 var GlobalArray = global.Array;
 var GlobalNumber = global.Number;
 var GlobalObject = global.Object;
-var InternalArray = utils.InternalArray;
 var iteratorSymbol = utils.ImportNow("iterator_symbol");
 var MakeRangeError;
 var MakeSyntaxError;