diff --git a/common/djangoapps/student/management/commands/anonymized_id_mapping.py b/common/djangoapps/student/management/commands/anonymized_id_mapping.py
index 6156d4bf1d..f1ed5bdef9 100644
--- a/common/djangoapps/student/management/commands/anonymized_id_mapping.py
+++ b/common/djangoapps/student/management/commands/anonymized_id_mapping.py
@@ -1,4 +1,4 @@
-# -*- coding: utf8 -*-
+# -*- coding: utf-8 -*-
 """Dump username,unique_id_for_user pairs as CSV.
 
 Give instructors easy access to the mapping from anonymized IDs to user IDs