diff --git a/server/books/models/contentblock.py b/server/books/models/contentblock.py
index 34b2204d..8c285bac 100644
--- a/server/books/models/contentblock.py
+++ b/server/books/models/contentblock.py
@@ -4,7 +4,6 @@ from django.db import models
 from wagtail.admin.edit_handlers import FieldPanel, TabbedInterface, ObjectList, StreamFieldPanel
 from wagtail.core.fields import StreamField
 from wagtail.images.blocks import ImageChooserBlock
-from wagtail.core import hooks
 
 from books.blocks import TextBlock, BasicKnowledgeBlock, LinkBlock, VideoBlock, DocumentBlock, \
     ImageUrlBlock, AssignmentBlock
@@ -74,8 +73,3 @@ class ContentBlock(StrictHierarchyPage):
     subpage_types = []
 
 
-@hooks.register('construct_explorer_page_queryset')
-def remove_user_created_content_blocks_from_menu(parent_page, pages, request):
-    if parent_page.content_type.model == 'chapter':
-        return ContentBlock.get_by_parent(parent_page.specific).exclude(user_created=True)
-    return pages
diff --git a/server/books/wagtail_hooks.py b/server/books/wagtail_hooks.py
new file mode 100644
index 00000000..733a151d
--- /dev/null
+++ b/server/books/wagtail_hooks.py
@@ -0,0 +1,10 @@
+from wagtail.core import hooks
+
+from .models import ContentBlock
+
+
+@hooks.register('construct_explorer_page_queryset')
+def remove_user_created_content_blocks_from_menu(parent_page, pages, request):
+    if parent_page.content_type.model == 'chapter':
+        return ContentBlock.get_by_parent(parent_page.specific).exclude(user_created=True)
+    return pages