diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 860571440a..6b7088b9ce 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -2073,7 +2073,7 @@
 { oid => '1365', descr => 'make ACL item',
   proname => 'makeaclitem', prorettype => 'aclitem',
   proargtypes => 'oid oid text bool', prosrc => 'makeaclitem' },
-{ oid => '3943', descr => 'TODO',
+{ oid => '3943', descr => 'show default privileges, for use by the information schema',
   proname => 'acldefault', prorettype => '_aclitem', proargtypes => 'char oid',
   prosrc => 'acldefault_sql' },
 { oid => '1689',