diff --git a/example/tests/integration/test_includes.py b/example/tests/integration/test_includes.py
index 3284c79b..d7f6f6d1 100644
--- a/example/tests/integration/test_includes.py
+++ b/example/tests/integration/test_includes.py
@@ -1,20 +1,29 @@
-import pytest, json
+import pytest
 from django.core.urlresolvers import reverse
+
 from example.tests.utils import load_json
 
 pytestmark = pytest.mark.django_db
 
 
 def test_included_data_on_list(multiple_entries, client):
-    multiple_entries[1].comments = []
-    response = client.get(reverse("entry-list") + '?include=comments')
+    response = client.get(reverse("entry-list") + '?include=comments&page_size=5')
     included = load_json(response.content).get('included')
 
-    assert [x.get('type') for x in included] == ['comments']
+    assert len(load_json(response.content)['data']) == len(multiple_entries), 'Incorrect entry count'
+    assert [x.get('type') for x in included] == ['comments', 'comments'], 'List included types are incorrect'
+
+    comment_count = len([resource for resource in included if resource["type"] == "comments"])
+    expected_comment_count = sum([entry.comment_set.count() for entry in multiple_entries])
+    assert comment_count == expected_comment_count, 'List comment count is incorrect'
+
 
 def test_included_data_on_detail(single_entry, client):
     response = client.get(reverse("entry-detail", kwargs={'pk': single_entry.pk}) + '?include=comments')
     included = load_json(response.content).get('included')
 
-    assert [x.get('type') for x in included] == ['comments']
+    assert [x.get('type') for x in included] == ['comments'], 'Detail included types are incorrect'
 
+    comment_count = len([resource for resource in included if resource["type"] == "comments"])
+    expected_comment_count = single_entry.comment_set.count()
+    assert comment_count == expected_comment_count, 'Detail comment count is incorrect'
diff --git a/rest_framework_json_api/utils.py b/rest_framework_json_api/utils.py
index 5418141d..147ef177 100644
--- a/rest_framework_json_api/utils.py
+++ b/rest_framework_json_api/utils.py
@@ -2,6 +2,7 @@
 Utils.
 """
 import copy
+
 import inflection
 from django.conf import settings
 from django.utils import six, encoding
@@ -410,6 +411,7 @@ def extract_included(fields, resource, resource_instance, included_resources):
     current_serializer = fields.serializer
     context = current_serializer.context
     included_serializers = get_included_serializers(current_serializer)
+    included_resources = copy.copy(included_resources)
 
     for field_name, field in six.iteritems(fields):
         # Skip URL field