diff --git a/forum/serializers/contents.py b/forum/serializers/contents.py
index d01f69eb..a8c5c319 100644
--- a/forum/serializers/contents.py
+++ b/forum/serializers/contents.py
@@ -67,6 +67,9 @@ class ContentSerializer(serializers.Serializer[dict[str, Any]]):
     at_position_list = serializers.ListField(default=[])
     user_id = serializers.CharField(source="author_id")
     username = serializers.CharField(source="author_username", allow_null=True)
+    author = serializers.CharField(
+        source="author_username", allow_null=True, required=False
+    )
     commentable_id = serializers.CharField(default="course")
     votes = VoteSummarySerializer()
     abuse_flaggers = serializers.ListField(child=serializers.CharField(), default=[])