diff --git a/download_data.py b/download_data.py
index e57c9c8..69452c5 100644
--- a/download_data.py
+++ b/download_data.py
@@ -31,7 +31,7 @@ def detailed_export_game(game_id: int, score: Optional[int] = None, var_id: Opti
     assert_msg = "Invalid response format from hanab.live while exporting game id {}".format(game_id)
 
     game_json = get("export/{}".format(game_id))
-    assert game_json.get('id') == game_id, assert_msg
+    assert game_json.get('id') == game_id, assert_msg + ": " + str(game_json)
 
     players = game_json.get('players', [])
     num_players = len(players)
diff --git a/site_api.py b/site_api.py
index c4c745f..c3f78fa 100644
--- a/site_api.py
+++ b/site_api.py
@@ -1,5 +1,5 @@
 import json
-import requests
+from typing import Optional, Dict
 import requests_cache
 from log_setup import logger
 
@@ -8,7 +8,7 @@ from log_setup import logger
 session = requests_cache.CachedSession('hanab.live')
 
 
-def get(url, refresh=False):
+def get(url, refresh=False) -> Optional[Dict]:
     #    print("sending request for " + url)
     query = "https://hanab.live/" + url
     logger.debug("GET {} (force_refresh={})".format(query, refresh))