diff --git a/lib/abstract-class.js b/lib/abstract-class.js
index f40f794f..960b4e73 100644
--- a/lib/abstract-class.js
+++ b/lib/abstract-class.js
@@ -106,9 +106,6 @@ AbstractClass.prototype._initProperties = function (data, applySetters) {
     this.trigger("initialize");
 }
 
-AbstractClass.setter = {};
-AbstractClass.getter = {};
-
 /**
  * @param {String} prop - property name
  * @param {Object} params - various property configuration
diff --git a/lib/schema.js b/lib/schema.js
index 03542ef1..78ded775 100644
--- a/lib/schema.js
+++ b/lib/schema.js
@@ -158,9 +158,16 @@ Schema.prototype.define = function defineClass(className, properties, settings)
     hiddenProperty(NewClass, 'cache', {});
     hiddenProperty(NewClass, 'mru', []);
 
-    // setup inheritance
-    NewClass.__proto__ = AbstractClass;
-    util.inherits(NewClass, AbstractClass);
+    // inherit AbstractClass methods
+    for (var i in AbstractClass) {
+        NewClass[i] = AbstractClass[i];
+    }
+    for (var j in AbstractClass.prototype) {
+        NewClass.prototype[j] = AbstractClass.prototype[j];
+    }
+
+    NewClass.getter = {};
+    NewClass.setter = {};
 
     // store class in model pool
     this.models[className] = NewClass;
diff --git a/package.json b/package.json
index eeb1be08..56c90d9e 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "jugglingdb",
   "description": "ORM for every database: redis, mysql, neo4j, mongodb, postgres, sqlite",
-  "version": "0.1.24-pre",
+  "version": "0.1.24-pre2",
   "author": "Anatoliy Chakkaev <rpm1602@gmail.com>",
   "contributors": [
     { "name": "Anatoliy Chakkaev",     "email": "rpm1602@gmail.com" },