diff --git a/cache/precache.py b/cache/precache.py
index 8109d039..705c9fb7 100644
--- a/cache/precache.py
+++ b/cache/precache.py
@@ -83,7 +83,7 @@ async def precache_data():
             # topics
             topics = get_with_stat(select(Topic))
             for topic in topics:
-                topic_dict = topic.dict() if not isinstance(topic, dict) else topic
+                topic_dict = topic.dict() if hasattr(topic, 'dict') else topic
                 await cache_topic(topic_dict)
                 await asyncio.gather(
                     precache_topics_followers(topic["id"], session), precache_topics_authors(topic_dict["id"], session)