diff --git a/CHANGES.rst b/CHANGES.rst
index a13f0f3..7b62995 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -7,6 +7,8 @@ Changelog
 
 * Json2: internal refactoring, to detect `"ids"` argument.
 
+* Json2: fix arguments of :meth:`Record.copy`.
+
 
 2.5.2 (2026-01-06)
 ~~~~~~~~~~~~~~~~~~
diff --git a/odooly.py b/odooly.py
index 6b50500..6b0ff23 100644
--- a/odooly.py
+++ b/odooly.py
@@ -120,7 +120,7 @@
 _pending_state = ('state', 'not in',
                   ['uninstallable', 'uninstalled', 'installed'])
 _base_method_params = {
-    'copy': ['ids', 'defaults'],
+    'copy': ['ids', 'default'],
     'create': ['vals_list'],
     'read': ['ids', 'fields', 'load'],
     'search': ['domain', 'offset', 'limit', 'order'],