diff --git a/tryton/trytond/model/model.py b/trytond/model/model.py
index c4ab96fc..bdb1c78b 100644
--- a/tryton/trytond/trytond/model/model.py
+++ b/tryton/trytond/trytond/model/model.py
@@ -258,7 +258,7 @@ class Model(URLMixin, PoolBase, metaclass=ModelMeta):
                     name = name[len('_parent_'):]
                     parent_values[name][field] = value
                     value = parent_values[name]
-                if getattr(self.__class__, name).context:
+                if hasattr(self.__class__, name) and getattr(self.__class__, name).context:
                     has_context[name] = value
 
             for name, value in parent_values.items():