diff --git a/lib/connectors/memory.js b/lib/connectors/memory.js
index c43e5093..4d98e05e 100644
--- a/lib/connectors/memory.js
+++ b/lib/connectors/memory.js
@@ -347,13 +347,19 @@ Memory.prototype.all = function all(model, filter, callback) {
   });
 
   function sorting(a, b) {
+    var undefinedA, undefinedB;
+
     for (var i = 0, l = this.length; i < l; i++) {
-      if (a[this[i].key] > b[this[i].key]) {
+      undefinedB = b[this[i].key] === undefined && a[this[i].key] !== undefined;
+      undefinedA = a[this[i].key] === undefined && b[this[i].key] !== undefined;
+
+      if (undefinedB || a[this[i].key] > b[this[i].key]) {
         return 1 * this[i].reverse;
-      } else if (a[this[i].key] < b[this[i].key]) {
+      } else if (undefinedA || a[this[i].key] < b[this[i].key]) {
         return -1 * this[i].reverse;
       }
     }
+
     return 0;
   }
 };
diff --git a/test/memory.test.js b/test/memory.test.js
index f07ab015..f3f16fd0 100644
--- a/test/memory.test.js
+++ b/test/memory.test.js
@@ -183,7 +183,7 @@ describe('Memory connector', function () {
       });
     });
 
-    it('support order with multiple fields', function (done) {
+    it('should support order with multiple fields', function (done) {
       User.find({order: 'vip ASC, seq DESC'}, function (err, posts) {
         should.not.exist(err);
         posts[0].seq.should.be.eql(4);
@@ -192,6 +192,17 @@ describe('Memory connector', function () {
       });
     });
 
+    it('should sort undefined values to the end when ordered DESC', function (done) {
+      User.find({order: 'vip ASC, order DESC'}, function (err, posts) {
+        console.log(posts);
+        should.not.exist(err);
+
+        posts[4].seq.should.be.eql(1);
+        posts[5].seq.should.be.eql(0);
+        done();
+      });
+    });
+
     it('should throw if order has wrong direction', function (done) {
       User.find({order: 'seq ABC'}, function (err, posts) {
         should.exist(err);
@@ -200,11 +211,11 @@ describe('Memory connector', function () {
     });
 
     it('should support neq operator for number', function (done) {
-      User.find({where: {order: {neq: 6}}}, function (err, users) {
+      User.find({where: {seq: {neq: 4}}}, function (err, users) {
         should.not.exist(err);
         users.length.should.be.equal(5);
         for (var i = 0; i < users.length; i++) {
-          users[i].order.should.not.be.equal(6);
+          users[i].seq.should.not.be.equal(4);
         }
         done();
       });
@@ -242,7 +253,6 @@ describe('Memory connector', function () {
           email: 'john@b3atl3s.co.uk',
           role: 'lead',
           birthday: new Date('1980-12-08'),
-          order: 2,
           vip: true
         },
         {