diff --git a/TonTools/Providers/TonCenterClient.py b/TonTools/Providers/TonCenterClient.py
index 97849ec..685695a 100644
--- a/TonTools/Providers/TonCenterClient.py
+++ b/TonTools/Providers/TonCenterClient.py
@@ -127,7 +127,10 @@ async def _get_nft_item(self, nft_address: str):
         collection_content_url = Cell.one_from_boc(base64.b64decode(content_data[0][1]['bytes'])).bits.get_top_upped_array().decode().split('\x01')[-1]
         # if '\x01' in collection_content_url:
         #     collection_content_url = collection_content_url.split('\x01')[1]
-        nft_content_url = collection_content_url + Cell.one_from_boc(base64.b64decode(content_data[0][1]['bytes'])).refs[0].bits.get_top_upped_array().decode()
+        if not refs:
+            nft_content_url = collection_content_url
+        else:
+            nft_content_url = collection_content_url + refs[0].bits.get_top_upped_array().decode()
 
         result['metadata'] = await get(nft_content_url)