diff --git a/openedx/features/course_experience/__init__.py b/openedx/features/course_experience/__init__.py
index a2dff74d45..c5dd98b9ed 100644
--- a/openedx/features/course_experience/__init__.py
+++ b/openedx/features/course_experience/__init__.py
@@ -14,7 +14,7 @@ WAFFLE_FLAG_NAMESPACE = WaffleFlagNamespace(name='course_experience')
 COURSE_OUTLINE_PAGE_FLAG = CourseWaffleFlag(WAFFLE_FLAG_NAMESPACE, 'course_outline_page', flag_undefined_default=True)
 
 # Waffle flag to enable a single unified "Course" tab.
-UNIFIED_COURSE_TAB_FLAG = CourseWaffleFlag(WAFFLE_FLAG_NAMESPACE, 'unified_course_tab')
+UNIFIED_COURSE_TAB_FLAG = CourseWaffleFlag(WAFFLE_FLAG_NAMESPACE, 'unified_course_tab', flag_undefined_default=True)
 
 # Waffle flag to enable the sock on the footer of the home and courseware pages.
 DISPLAY_COURSE_SOCK_FLAG = CourseWaffleFlag(WAFFLE_FLAG_NAMESPACE, 'display_course_sock')