diff --git a/src/calibre/gui2/dialogs/edit_category_notes.py b/src/calibre/gui2/dialogs/edit_category_notes.py
index 05cc2d7452..f593f0b30e 100644
--- a/src/calibre/gui2/dialogs/edit_category_notes.py
+++ b/src/calibre/gui2/dialogs/edit_category_notes.py
@@ -234,6 +234,8 @@ class NoteEditor(Editor):
     editor_class = NoteEditorWidget
 
     def get_doc(self):
+        self.editor.referenced_resources = set()
+        self.editor.searchable_text = ''
         html = self.editor.html
         return html, self.editor.searchable_text, self.editor.referenced_resources, self.editor.images.values()