diff --git a/canaille/apputils.py b/canaille/apputils.py
index b90cbd76..8c2de64e 100644
--- a/canaille/apputils.py
+++ b/canaille/apputils.py
@@ -51,7 +51,7 @@ def default_fields():
     read = set()
     write = set()
     for acl in current_app.config["ACL"].values():
-        if "filter" not in acl:
+        if "FILTER" not in acl:
             read |= set(acl.get("READ", []))
             write |= set(acl.get("WRITE", []))