diff --git a/api/server.py b/api/server.py
index 3b2b070f..2b5712f6 100755
--- a/api/server.py
+++ b/api/server.py
@@ -150,7 +150,7 @@ async def reverse_lookup(curies) -> Dict[str, Dict]:
     response.raise_for_status()
     response_json = response.json()
     output = {
-        curie: []
+        curie: {}
         for curie in curies
     }
     for doc in response_json["response"]["docs"]: