diff --git a/client/ayon_core/tools/sceneinventory/model.py b/client/ayon_core/tools/sceneinventory/model.py
index 29818e387f..640a8017ab 100644
--- a/client/ayon_core/tools/sceneinventory/model.py
+++ b/client/ayon_core/tools/sceneinventory/model.py
@@ -133,7 +133,6 @@ class InventoryModel(QtGui.QStandardItemModel):
         container_items = self._controller.get_container_items()
         self._clear_items()
         repre_id = set()
-        repre_id_by_project_id = collections.defaultdict(set)
         version_items_by_product_id = collections.defaultdict(dict)
         repre_info_by_id_by_project = collections.defaultdict(list)
         item_by_repre_id_by_project_id = collections.defaultdict(