diff --git a/lib/inat_vision_api.py b/lib/inat_vision_api.py
index 48ee2d8..5a22e0f 100644
--- a/lib/inat_vision_api.py
+++ b/lib/inat_vision_api.py
@@ -243,7 +243,7 @@ def download_observation(self, observation_id, image_uuid):
         response = urllib.request.urlopen(url)
         data = json.loads(response.read())
         if (data is None or data["results"] is None or len ( data["results"] ) == 0 or data["results"][0] is
-            None or data["results"][0]["photos"] is None or data["results"][0]["photos"][0] is
+            None or data["results"][0]["photos"] is None or len ( data["results"][0]["photos"] ) == 0 or data["results"][0]["photos"][0] is
                 None or data["results"][0]["photos"][0]["url"] is None):
             return None, None, None, None
         # download the first image if it isn't already cached