diff --git a/endpoints/registry.py b/endpoints/registry.py
index 7d04b6409..2a77e1ef9 100644
--- a/endpoints/registry.py
+++ b/endpoints/registry.py
@@ -288,7 +288,7 @@ def get_image_json(namespace, repository, image_id, headers):
     flask_abort(404)
 
   profile.debug('Looking up repo layer size')
-  size = (repo_image.storage and repo_image.storage.image_size) or repo_image.image_size
+  size = repo_image.storage.image_size
   headers['X-Docker-Size'] = str(size)
 
   response = make_response(data, 200)