diff --git a/data/dataset.py b/data/dataset.py
index 1c231ba..69f04fa 100644
--- a/data/dataset.py
+++ b/data/dataset.py
@@ -12,6 +12,8 @@ from typing import TypeVar, Iterable
 from tqdm import tqdm
 
 
+DEFAULT_MAX_CAPTION_LENGTH = 2048
+
 def overlay(overlay, base):
     return overlay if overlay is not None else base
 
@@ -235,7 +237,7 @@ class Dataset:
                 rating=config.rating or 1.0,
                 tags=tags,
                 tag_weights=tag_weights,
-                max_target_length=config.max_caption_length,
+                max_target_length=config.max_caption_length or DEFAULT_MAX_CAPTION_LENGTH,
                 use_weights=use_weights)
 
             item = ImageTrainItem(
diff --git a/data/image_train_item.py b/data/image_train_item.py
index bab9c13..623c664 100644
--- a/data/image_train_item.py
+++ b/data/image_train_item.py
@@ -29,7 +29,6 @@ from torchvision import transforms
 
 _RANDOM_TRIM = 0.04
 
-DEFAULT_MAX_CAPTION_LENGTH = 2048
 
 OptionalImageCaption = typing.Optional['ImageCaption']
 
diff --git a/test/test_dataset.py b/test/test_dataset.py
index 981ca3d..6179234 100644
--- a/test/test_dataset.py
+++ b/test/test_dataset.py
@@ -1,5 +1,5 @@
 import os
-from data.dataset import Dataset, ImageConfig, Tag
+from data.dataset import Dataset, ImageConfig, Tag, DEFAULT_MAX_CAPTION_LENGTH
 
 from textwrap import dedent
 from pyfakefs.fake_filesystem_unittest import TestCase
@@ -276,8 +276,8 @@ class TestDataset(TestCase):
         self.assertEqual(actual[0].cond_dropout, 0.01)
         self.assertEqual(actual[0].caption.rating(), 1.1)
         self.assertEqual(actual[0].caption.get_caption(), "first caption, tag, tag_2")
-        # Can't test this
-        # self.assertTrue(actual[0].caption.__use_weights)
+        self.assertTrue(actual[0].caption._ImageCaption__use_weights)
+        self.assertEqual(actual[0].caption._ImageCaption__max_target_length, 1024)
 
         self.assertEqual(actual[1].pathname, os.path.abspath('2.jpg'))
         self.assertEqual(actual[1].multiplier, 1.0)
@@ -285,5 +285,5 @@ class TestDataset(TestCase):
         self.assertIsNone(actual[1].cond_dropout)
         self.assertEqual(actual[1].caption.rating(), 1.0)
         self.assertEqual(actual[1].caption.get_caption(), "single caption")
-        # Can't test this
-        # self.assertFalse(actual[1].caption.__use_weights)
\ No newline at end of file
+        self.assertFalse(actual[1].caption._ImageCaption__use_weights)
+        self.assertEqual(actual[1].caption._ImageCaption__max_target_length, DEFAULT_MAX_CAPTION_LENGTH)
\ No newline at end of file