diff --git a/server/core/convert_page_translation.py b/server/core/convert_page_translation.py
index 04652c98..e47e3040 100644
--- a/server/core/convert_page_translation.py
+++ b/server/core/convert_page_translation.py
@@ -1,3 +1,4 @@
+from wagtail.actions.copy_for_translation import ParentNotTranslatedError
 from wagtail.models import Locale, Page
 
 from books.models.module import Module
@@ -53,7 +54,7 @@ def convert_page_to_translation(slug: str, original_slug: str, language_code="en
         logger.debug("Creating topic translation")
         try:
             translated_topic = translate_page(topic, locale)
-        except Page.DoesNotExist:
+        except ParentNotTranslatedError:
             # let's try to translate the parent page too
             translate_page(topic.get_parent(), locale)
             translated_topic = translate_page(topic, locale)