diff --git a/Metsys.Little.Tests/IntegrationTests.cs b/Metsys.Little.Tests/IntegrationTests.cs
index 65b85f5..37d2ef0 100644
--- a/Metsys.Little.Tests/IntegrationTests.cs
+++ b/Metsys.Little.Tests/IntegrationTests.cs
@@ -53,7 +53,6 @@ public void CollectionsAreLossless()
          };
          expected.Roles.Add("abc123");
          expected.Roles.Add("lkasdk");
-         expected.Roles.Add(null);
          var data = Serializer.Serialize(expected);
          var actual = Deserializer.Deserialize<ComplexObject>(data);
 
diff --git a/Metsys.Little.Tests/SerializerTests.cs b/Metsys.Little.Tests/SerializerTests.cs
index 861a283..b65f8f4 100644
--- a/Metsys.Little.Tests/SerializerTests.cs
+++ b/Metsys.Little.Tests/SerializerTests.cs
@@ -136,7 +136,7 @@ public void NullArrayGetsSerialized()
          Assert.Equal(0, data[0]);
          Assert.Equal(1, data.Length);
       }
-      [Fact]
+      [Fact(Skip="took out this feature")]
       public void SerializesArrayWithMixOfNullsAndNotNulls()
       {
          var data = Serializer.Serialize(new[] {"ab", null, "cd", null, null});
diff --git a/Metsys.Little/Deserializer.cs b/Metsys.Little/Deserializer.cs
index 7ecfb85..53411ea 100644
--- a/Metsys.Little/Deserializer.cs
+++ b/Metsys.Little/Deserializer.cs
@@ -70,11 +70,10 @@ private object ReadList(Type listType, object existingContainer)
             var count = 0;
             var itemType = ListHelper.GetListItemType(listType);
             var wrapper = BaseWrapper.Create(listType, itemType, existingContainer);
-            var nullable = MagicProperty.IsNullable(itemType);
-
+            
             while (count++ < totalItems)
             {
-                var value = nullable && IsNull() ? null : DeserializeValue(itemType, null);
+                var value = DeserializeValue(itemType, null);
                 wrapper.Add(value);
             }
             return wrapper.Collection;
diff --git a/Metsys.Little/Helpers/Lists/BaseWrapper.cs b/Metsys.Little/Helpers/Lists/BaseWrapper.cs
index 9c99881..2eb16b4 100644
--- a/Metsys.Little/Helpers/Lists/BaseWrapper.cs
+++ b/Metsys.Little/Helpers/Lists/BaseWrapper.cs
@@ -21,11 +21,20 @@ private static BaseWrapper CreateWrapperFromType(Type type, Type itemType)
                 return (BaseWrapper)Activator.CreateInstance(typeof(ArrayWrapper<>).MakeGenericType(itemType));
             }
 
-            var isCollection = false;
-            var types = new List<Type>(type.GetInterfaces().Select(h => h.IsGenericType ? h.GetGenericTypeDefinition() : h));
-            types.Insert(0, type.IsGenericType ? type.GetGenericTypeDefinition() : type);              
-            foreach(var @interface in types)
+            var isCollection = false;
+            var interfaces = type.GetInterfaces();
+            var count = interfaces.Length + 1;
+            var types = new List<Type>(count) {type.IsGenericType ? type.GetGenericTypeDefinition() : type};
+            types.AddRange(interfaces);
+            
+            for(var i = 0; i < count; ++i)
             {
+                var @interface = types[i];
+                if (@interface.IsGenericType)
+                {
+                    @interface = @interface.GetGenericTypeDefinition();
+                    types[i] = @interface;
+                }
                 if (typeof(IList<>).IsAssignableFrom(@interface) || typeof(IList).IsAssignableFrom(@interface))
                 {
                     return new ListWrapper();
@@ -41,8 +50,9 @@ private static BaseWrapper CreateWrapperFromType(Type type, Type itemType)
             }
 
             //a last-ditch pass
-            foreach (var @interface in types)
+            for(var i = 0; i < count; ++i)
             {
+                var @interface = types[i];
                 if (typeof(IEnumerable<>).IsAssignableFrom(@interface) || typeof(IEnumerable).IsAssignableFrom(@interface))
                 {
                     return new ListWrapper();
diff --git a/Metsys.Little/Serializer.cs b/Metsys.Little/Serializer.cs
index 272e747..4d41093 100644
--- a/Metsys.Little/Serializer.cs
+++ b/Metsys.Little/Serializer.cs
@@ -64,10 +64,6 @@ private void WriteObject(object o)
                 var value = property.Getter(o);
                 if (value == null)
                 {
-                    if (!property.Nullable)
-                    {
-                        throw new InvalidOperationException(string.Format("Got not value for non-nullable type: {0}", property.Type.Name));
-                    }
                     WriteNull();
                     continue;
                 }
@@ -77,7 +73,7 @@ private void WriteObject(object o)
 
         private void SerializeMember(object value, bool nullable)
         {
-            Type type = value.GetType();
+            var type = value.GetType();
             if (type.IsEnum)
             {
                 type = Enum.GetUnderlyingType(type);
@@ -106,11 +102,11 @@ private void Write(IEnumerable enumerable)
             var start = _stream.Position;
             _writer.Write(0); //placeholder for # of elements
             var count = 0;
-            bool? nullable = null;
+            //bool? nullable = null;
             foreach (var item in enumerable)
             {
-                ++count;
-                if (item == null)
+                ++count;
+/*               if (item == null)
                 {
                     WriteNull();
                     continue;
@@ -119,7 +115,8 @@ private void Write(IEnumerable enumerable)
                 {
                     nullable = MagicProperty.IsNullable(item.GetType());
                 }
-                SerializeMember(item, nullable.Value);
+ */
+                SerializeMember(item, false);
             }
             _stream.Seek(start, SeekOrigin.Begin);
             _writer.Write(count);