diff --git a/src/calibre/gui2/dialogs/tag_list_editor.py b/src/calibre/gui2/dialogs/tag_list_editor.py
index 9391851719..60897b238f 100644
--- a/src/calibre/gui2/dialogs/tag_list_editor.py
+++ b/src/calibre/gui2/dialogs/tag_list_editor.py
@@ -352,7 +352,7 @@ class TagListEditor(QDialog, Ui_TagListEditor):
         self.search_box.setMinimumContentsLength(25)
         if category is not None:
             item_map = get_gui().current_db.new_api.get_item_name_map(category)
-            self.original_links = {item_map[k]:v for k,v in link_map.items()}
+            self.original_links = {item_map[k]:v for k,v in link_map.items() if k in item_map}
             self.current_links = copy.copy(self.original_links)
         else:
             self.original_links = {}