diff --git a/client/ayon_core/tools/attribute_defs/widgets.py b/client/ayon_core/tools/attribute_defs/widgets.py
index 004a3bd921..1e948b2d28 100644
--- a/client/ayon_core/tools/attribute_defs/widgets.py
+++ b/client/ayon_core/tools/attribute_defs/widgets.py
@@ -248,12 +248,10 @@ class AttributeDefinitionsWidget(QtWidgets.QWidget):
 
     def set_value(self, value):
         new_value = copy.deepcopy(value)
-        unused_keys = set(new_value.keys())
         for widget in self._widgets_by_id.values():
             attr_def = widget.attr_def
             if attr_def.key not in new_value:
                 continue
-            unused_keys.remove(attr_def.key)
 
             widget_value = new_value[attr_def.key]
             if widget_value is None: