diff --git a/.gitignore b/.gitignore
index 315674fe..0300bc77 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,8 @@
 .*
 !.gitignore
-*.pyc
-.*.swp
+*~
+*.py[co]
+.*.sw[po]
 *.egg
 docs/.build
 docs/_build
diff --git a/docs/changelog.rst b/docs/changelog.rst
index b2ef802e..71f8e514 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -5,6 +5,8 @@ Changelog
 Changes in dev
 ==============
 
+- Updated ComplexFields so if required they won't accept empty lists / dicts
+- Added spec file for rpm-based distributions
 - Fixed ListField so it doesnt accept strings
 - Added DynamicDocument and EmbeddedDynamicDocument classes for expando schemas
 
diff --git a/mongoengine/base.py b/mongoengine/base.py
index 40953f17..adf5eee9 100644
--- a/mongoengine/base.py
+++ b/mongoengine/base.py
@@ -282,6 +282,11 @@ class ComplexBaseField(BaseField):
                 raise ValidationError('Invalid %s item (%s)' % (
                         self.field.__class__.__name__, str(v)))
 
+        # Don't allow empty values if required
+        if self.required and not value:
+            raise ValidationError('Field "%s" is required and cannot be empty' %
+                                  self.name)
+
     def prepare_query_value(self, op, value):
         return self.to_mongo(value)
 
diff --git a/mongoengine/fields.py b/mongoengine/fields.py
index a2008224..0104c56f 100644
--- a/mongoengine/fields.py
+++ b/mongoengine/fields.py
@@ -460,6 +460,9 @@ class GenericEmbeddedDocumentField(BaseField):
 class ListField(ComplexBaseField):
     """A list field that wraps a standard field, allowing multiple instances
     of the field to be used as a list in the database.
+
+    .. note::
+        Required means it cannot be empty - as the default for ListFields is []
     """
 
     # ListFields cannot be indexed with _types - MongoDB doesn't support this
@@ -514,6 +517,9 @@ class DictField(ComplexBaseField):
     """A dictionary field that wraps a standard Python dictionary. This is
     similar to an embedded document, but the structure is not defined.
 
+    .. note::
+        Required means it cannot be empty - as the default for ListFields is []
+
     .. versionadded:: 0.3
     .. versionchanged:: 0.5 - Can now handle complex / varying types of data
     """
diff --git a/python-mongoengine.spec b/python-mongoengine.spec
new file mode 100644
index 00000000..054993d4
--- /dev/null
+++ b/python-mongoengine.spec
@@ -0,0 +1,53 @@
+# sitelib for noarch packages, sitearch for others (remove the unneeded one)
+%{!?python_sitelib: %global python_sitelib %(%{__python} -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())")}
+%{!?python_sitearch: %global python_sitearch %(%{__python} -c "from distutils.sysconfig import get_python_lib; print(get_python_lib(1))")}
+
+%define srcname mongoengine
+
+Name:           python-%{srcname}
+Version:        0.5.0
+Release:        2%{?dist}
+Summary:        A Python Document-Object Mapper for working with MongoDB
+
+Group:          Development/Libraries
+License:        MIT
+URL:            https://github.com/namlook/mongoengine
+Source0:        %{srcname}-%{version}.tar.bz2
+
+BuildRequires:  python-devel
+BuildRequires:  python-setuptools
+
+Requires:       mongodb
+Requires:       pymongo
+Requires:       python-blinker
+
+%description
+MongoEngine is an ORM-like layer on top of PyMongo.
+
+%prep
+%setup -q -n %{srcname}-%{version}
+
+
+%build
+# Remove CFLAGS=... for noarch packages (unneeded)
+CFLAGS="$RPM_OPT_FLAGS" %{__python} setup.py build
+
+
+%install
+rm -rf $RPM_BUILD_ROOT
+%{__python} setup.py install -O1 --skip-build --root $RPM_BUILD_ROOT
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%files
+%defattr(-,root,root,-)
+%doc docs AUTHORS LICENSE README.rst
+# For noarch packages: sitelib
+ %{python_sitelib}/*
+# For arch-specific packages: sitearch
+# %{python_sitearch}/*
+
+%changelog
+* Fri Sep 23 2011 Pau Aliagas <linuxnow@gmail.com> 0.5.0-1
+- Initial version
diff --git a/tests/fields.py b/tests/fields.py
index 6c183b49..c95b544e 100644
--- a/tests/fields.py
+++ b/tests/fields.py
@@ -503,7 +503,6 @@ class FieldTest(unittest.TestCase):
         post.info = [{'test': 3}]
         post.save()
 
-
         self.assertEquals(BlogPost.objects.count(), 3)
         self.assertEquals(BlogPost.objects.filter(info__exact='test').count(), 1)
         self.assertEquals(BlogPost.objects.filter(info__0__test='test').count(), 1)
@@ -533,7 +532,6 @@ class FieldTest(unittest.TestCase):
 
         Simple.drop_collection()
 
-
     def test_list_field_rejects_strings(self):
         """Strings aren't valid list field data types"""
 
@@ -546,6 +544,26 @@ class FieldTest(unittest.TestCase):
 
         self.assertRaises(ValidationError, e.save)
 
+    def test_complex_field_required(self):
+        """Ensure required cant be None / Empty"""
+
+        class Simple(Document):
+            mapping = ListField(required=True)
+
+        Simple.drop_collection()
+        e = Simple()
+        e.mapping = []
+
+        self.assertRaises(ValidationError, e.save)
+
+        class Simple(Document):
+            mapping = DictField(required=True)
+
+        Simple.drop_collection()
+        e = Simple()
+        e.mapping = {}
+
+        self.assertRaises(ValidationError, e.save)
 
     def test_list_field_complex(self):
         """Ensure that the list fields can handle the complex types."""