diff --git a/lms/djangoapps/discussion/rest_api/utils.py b/lms/djangoapps/discussion/rest_api/utils.py
index c8ccaf11a7..0a849dc211 100644
--- a/lms/djangoapps/discussion/rest_api/utils.py
+++ b/lms/djangoapps/discussion/rest_api/utils.py
@@ -78,4 +78,5 @@ def add_stats_for_users_with_no_discussion_content(course_stats, users_in_course
             'active_flags': 0,
             'inactive_flags': 0,
         })
+    updated_course_stats = sorted(updated_course_stats, key=lambda d: len(d['username']))
     return updated_course_stats