diff --git a/stac_fastapi/opensearch/stac_fastapi/opensearch/database_logic.py b/stac_fastapi/opensearch/stac_fastapi/opensearch/database_logic.py
index d174e295..95129f27 100644
--- a/stac_fastapi/opensearch/stac_fastapi/opensearch/database_logic.py
+++ b/stac_fastapi/opensearch/stac_fastapi/opensearch/database_logic.py
@@ -359,7 +359,7 @@ async def get_all_collections(
             search_body["search_after"] = search_after
 
         response = await self.client.search(
-            index="collections",
+            index=COLLECTIONS_INDEX,
             body=search_body,
         )