diff --git a/lms/djangoapps/discussion/views.py b/lms/djangoapps/discussion/views.py
index f28488e78a..36da39591d 100644
--- a/lms/djangoapps/discussion/views.py
+++ b/lms/djangoapps/discussion/views.py
@@ -789,7 +789,7 @@ class DiscussionBoardFragmentView(EdxFragmentView):
         works in conjunction with the Django pipeline to ensure that in development mode
         the files are loaded individually, but in production just the single bundle is loaded.
         """
-        return list(set(self.get_js_dependencies('discussion_vendor')))
+        return list(dict.fromkeys(self.get_js_dependencies('discussion_vendor')))
 
     def js_dependencies(self):
         """