diff --git a/lib/options/custom.js b/lib/options/custom.js
index d7435664..67ee0795 100644
--- a/lib/options/custom.js
+++ b/lib/options/custom.js
@@ -45,9 +45,9 @@ module.exports = function(proto) {
 
     var doSplit = true;
 
-    if (arguments.length > 1) {
-      options = [].slice.call(arguments);
-      doSplit = false;
+    if (options.length > 1) {
+        options = [].slice.call(options);
+        doSplit = false;
     }
 
     if (!Array.isArray(options)) {