diff --git a/lodash.js b/lodash.js
index 409ffa647..9f7429bd0 100644
--- a/lodash.js
+++ b/lodash.js
@@ -1248,8 +1248,7 @@
 
     /** Used for built-in method references. */
     var arrayProto = context.Array.prototype,
-        objectProto = context.Object.prototype,
-        stringProto = context.String.prototype;
+        objectProto = context.Object.prototype;
 
     /** Used to resolve the decompiled source of functions. */
     var funcToString = context.Function.prototype.toString;
@@ -1287,7 +1286,6 @@
         getPrototypeOf = Object.getPrototypeOf,
         getOwnPropertySymbols = Object.getOwnPropertySymbols,
         iteratorSymbol = typeof (iteratorSymbol = _Symbol && _Symbol.iterator) == 'symbol' ? iteratorSymbol : undefined,
-        pow = Math.pow,
         propertyIsEnumerable = objectProto.propertyIsEnumerable,
         setTimeout = context.setTimeout,
         splice = arrayProto.splice;