diff --git a/cms/models_test.py b/cms/models_test.py
index 87745bde5..ff1698f08 100644
--- a/cms/models_test.py
+++ b/cms/models_test.py
@@ -173,6 +173,7 @@ def test_course_page_context(  # noqa: PLR0913
             member.linked_instructor_page
             for member in course_page.linked_instructors.order_by("order").all()
         ],
+        "custom_tabs": [],
     }
 
     context = course_page.get_context(request=request)