diff --git a/common/djangoapps/course_groups/views.py b/common/djangoapps/course_groups/views.py
index a9a058a539..bc93729a2a 100644
--- a/common/djangoapps/course_groups/views.py
+++ b/common/djangoapps/course_groups/views.py
@@ -220,6 +220,6 @@ def debug_cohort_mgmt(request, course_key):
 
     context = {'cohorts_ajax_url': reverse(
         'cohorts',
-        kwargs={'course_id': course_key.to_deprecated_string()}
+        kwargs={'course_key': course_key.to_deprecated_string()}
     )}
     return render_to_response('/course_groups/debug.html', context)
diff --git a/lms/djangoapps/instructor/views/legacy.py b/lms/djangoapps/instructor/views/legacy.py
index 53c28793a5..a973cce2fc 100644
--- a/lms/djangoapps/instructor/views/legacy.py
+++ b/lms/djangoapps/instructor/views/legacy.py
@@ -1035,7 +1035,7 @@ def instructor_dashboard(request, course_id):
         'course_errors': modulestore().get_course_errors(course.id),
         'instructor_tasks': instructor_tasks,
         'offline_grade_log': offline_grades_available(course_key),
-        'cohorts_ajax_url': reverse('cohorts', kwargs={'course_id': course_key.to_deprecated_string()}),
+        'cohorts_ajax_url': reverse('cohorts', kwargs={'course_key': course_key.to_deprecated_string()}),
 
         'analytics_results': analytics_results,
         'disable_buttons': disable_buttons,
diff --git a/lms/urls.py b/lms/urls.py
index 9a001dc490..ac96ee4be6 100644
--- a/lms/urls.py
+++ b/lms/urls.py
@@ -300,21 +300,21 @@ if settings.COURSEWARE_ENABLED:
             'open_ended_grading.views.take_action_on_flags', name='open_ended_flagged_problems_take_action'),
 
         # Cohorts management
-        url(r'^courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/cohorts$',
+        url(r'^courses/(?P<course_key>[^/]+/[^/]+/[^/]+)/cohorts$',
             'course_groups.views.list_cohorts', name="cohorts"),
-        url(r'^courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/cohorts/add$',
+        url(r'^courses/(?P<course_key>[^/]+/[^/]+/[^/]+)/cohorts/add$',
             'course_groups.views.add_cohort',
             name="add_cohort"),
-        url(r'^courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/cohorts/(?P<cohort_id>[0-9]+)$',
+        url(r'^courses/(?P<course_key>[^/]+/[^/]+/[^/]+)/cohorts/(?P<cohort_id>[0-9]+)$',
             'course_groups.views.users_in_cohort',
             name="list_cohort"),
-        url(r'^courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/cohorts/(?P<cohort_id>[0-9]+)/add$',
+        url(r'^courses/(?P<course_key>[^/]+/[^/]+/[^/]+)/cohorts/(?P<cohort_id>[0-9]+)/add$',
             'course_groups.views.add_users_to_cohort',
             name="add_to_cohort"),
-        url(r'^courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/cohorts/(?P<cohort_id>[0-9]+)/delete$',
+        url(r'^courses/(?P<course_key>[^/]+/[^/]+/[^/]+)/cohorts/(?P<cohort_id>[0-9]+)/delete$',
             'course_groups.views.remove_user_from_cohort',
             name="remove_from_cohort"),
-        url(r'^courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/cohorts/debug$',
+        url(r'^courses/(?P<course_key>[^/]+/[^/]+/[^/]+)/cohorts/debug$',
             'course_groups.views.debug_cohort_mgmt',
             name="debug_cohort_mgmt"),