diff --git a/boards/models/thread.py b/boards/models/thread.py
--- a/boards/models/thread.py
+++ b/boards/models/thread.py
@@ -127,7 +127,7 @@ class Thread(models.Model):
 
         query = self.replies.order_by('pub_time').prefetch_related('images')
         if view_fields_only:
-            query = query.defer('poster_user_agent', 'text_markup_type')
+            query = query.defer('poster_user_agent')
         return query.all()
 
     def get_replies_with_images(self, view_fields_only=False):
diff --git a/boards/tests/test_post.py b/boards/tests/test_post.py
--- a/boards/tests/test_post.py
+++ b/boards/tests/test_post.py
@@ -112,4 +112,25 @@ class PostTests(TestCase):
         first_post = posts_in_second_page[0]
 
         self.assertEqual(all_threads[settings.THREADS_PER_PAGE].id,
-                         first_post.id)
\ No newline at end of file
+                         first_post.id)
+
+    def test_thread_replies(self):
+        """
+        Tests that the replies can be queried from a thread in all possible
+        ways.
+        """
+
+        tag = Tag.objects.create(name='test_tag')
+        opening_post = Post.objects.create_post(title='title', text='text',
+                                        tags=[tag])
+        thread = opening_post.get_thread()
+
+        reply1 = Post.objects.create_post(title='title', text='text', thread=thread)
+        reply2 = Post.objects.create_post(title='title', text='text', thread=thread)
+
+        replies = thread.get_replies()
+        self.assertTrue(len(replies) > 0, 'No replies found for thread.')
+
+        replies = thread.get_replies(view_fields_only=True)
+        self.assertTrue(len(replies) > 0,
+                'No replies found for thread with view fields only.')