diff --git a/depicts/saam.py b/depicts/saam.py
index 16dc48a..1c14a03 100644
--- a/depicts/saam.py
+++ b/depicts/saam.py
@@ -21,6 +21,8 @@ def parse_html(html):
     ld = json.loads(root.findtext('.//script[@type="application/ld+json"]'))
 
     ul = root.find('.//ul[@class="ontology-list"]')
+    if ul is None:
+        return {'ld': ld, 'keywords': []}
     assert ul.tag == 'ul'
     keywords = [li.text for li in ul]
     return {'ld': ld, 'keywords': keywords}
@@ -29,10 +31,10 @@ def get_catalog(saam_id):
     data = parse_html(get_html(saam_id))
     ret = {
         'institution': 'Smithsonian American Art Museum',
-        'keywords': data['keywords'],
     }
+    if data['keywords']:
+        ret['keywords'] = data['keywords']
     if 'description' in data['ld']:
         ret['description'] = data['ld']['description']
-    return ret
-
 
+    return ret if 'description' in ret or 'keywords' in ret else {}