diff --git a/trytond/ir/avatar.py b/trytond/ir/avatar.py
index 9c56efd42f..50e896b75c 100644
--- a/trytond/ir/avatar.py
+++ b/trytond/ir/avatar.py
@@ -71,6 +71,16 @@ class Avatar(ImageMixin, ResourceMixin, ModelSQL):
         super().write(*args)
         cls.clear_cache(avatars)
 
+    @classmethod
+    def copy(cls, avatars, default=None):
+        if default is None:
+            default = {}
+        else:
+            default = default.copy()
+        default.setdefault('uuid', None)
+        default.setdefault('cache', None)
+        return super().copy(avatars, default=default)
+
     @property
     def url(self):
         if self.image_id or self.image:
diff --git a/trytond/model/avatar.py b/trytond/model/avatar.py
index 727e6e5d06..4411f5e3ca 100644
--- a/trytond/model/avatar.py
+++ b/trytond/model/avatar.py
@@ -67,6 +67,15 @@ def avatar_mixin(size=64, default=None):
                     record.avatar = avatar
             cls.save(records)
 
+        @classmethod
+        def copy(cls, avatars, default=None):
+            if default is None:
+                default = {}
+            else:
+                default = default.copy()
+            default.setdefault('avatars', [])
+            return super().copy(avatars, default=default)
+
         if default:
 
             @classmethod