diff --git a/lib/abstract-class.js b/lib/abstract-class.js
index 2fcd2be0..ddbc07e7 100644
--- a/lib/abstract-class.js
+++ b/lib/abstract-class.js
@@ -225,6 +225,7 @@ AbstractClass.prototype.save = function (options, callback) {
     }
 
     callback = callback || function () {};
+    options = options || {};
 
     if (!('validate' in options)) {
         options.validate = true;