diff --git a/backend/open_webui/retrieval/vector/dbs/chroma.py b/backend/open_webui/retrieval/vector/dbs/chroma.py
index 00d73a889..c40618fcc 100644
--- a/backend/open_webui/retrieval/vector/dbs/chroma.py
+++ b/backend/open_webui/retrieval/vector/dbs/chroma.py
@@ -51,8 +51,8 @@ class ChromaClient:
 
     def has_collection(self, collection_name: str) -> bool:
         # Check if the collection exists based on the collection name.
-        collections = self.client.list_collections()
-        return collection_name in [collection.name for collection in collections]
+        collection_names = self.client.list_collections()
+        return collection_name in collection_names
 
     def delete_collection(self, collection_name: str):
         # Delete the collection based on the collection name.