diff --git a/cms/djangoapps/contentstore/views/tests/test_tabs.py b/cms/djangoapps/contentstore/views/tests/test_tabs.py
index 5966895d2f49..3f0a6f02f1b4 100644
--- a/cms/djangoapps/contentstore/views/tests/test_tabs.py
+++ b/cms/djangoapps/contentstore/views/tests/test_tabs.py
@@ -191,10 +191,10 @@ def test_delete(self):
             tabs.primitive_delete(course, 6)
 
         assert course.tabs[1] != {'type': 'dates', 'name': 'Dates'}
-        tabs.primitive_delete(course, 1)
+        tabs.primitive_delete(course, len(course.tabs) - 2)
         assert {'type': 'progress'} not in course.tabs
         # Check that dates has shifted up
-        assert course.tabs[1] == {'type': 'dates', 'name': 'Dates'}
+        assert course.tabs[-1] == {'type': 'dates', 'name': 'Dates'}
 
     def test_insert(self):
         """Test primitive tab insertion."""
diff --git a/lms/djangoapps/courseware/tabs.py b/lms/djangoapps/courseware/tabs.py
index 94caf0a4fb94..1949cd268864 100644
--- a/lms/djangoapps/courseware/tabs.py
+++ b/lms/djangoapps/courseware/tabs.py
@@ -61,6 +61,7 @@ class SyllabusTab(EnrolledTab):
     """
     type = 'syllabus'
     title = gettext_noop('Syllabus')
+    priority = 980
     view_name = 'syllabus'
     allow_multiple = True
     is_default = False
@@ -78,6 +79,7 @@ class ProgressTab(EnrolledTab):
     """
     type = 'progress'
     title = gettext_noop('Progress')
+    priority = 990
     view_name = 'progress'
     is_hideable = True
     is_default = False
@@ -303,6 +305,7 @@ class DatesTab(EnrolledTab):
     type = "dates"
     # We don't have the user in this context, so we don't want to translate it at this level.
     title = gettext_noop("Dates")
+    priority = 1000
     view_name = "dates"
 
     def __init__(self, tab_dict):