diff --git a/lib/util.js b/lib/util.js
index f79c5961..62e28053 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -619,9 +619,7 @@
          */
         this.getType                = function(variable) {
             var regExp      = new RegExp('\\s([a-zA-Z]+)'),
-                obj         = {},
-                toStr       = obj.toString,
-                str         = toStr.call(variable),
+                str         = {}.toString.call(variable),
                 typeBig     = str.match(regExp)[1],
                 type        = typeBig.toLowerCase();