diff --git a/backend/services/core/migrations/20230822094308_add_custom_author_type_to_articles.ts b/backend/services/core/migrations/20230822094308_add_custom_author_type_to_articles.ts
index 3ab1d6e0..d7184a9f 100644
--- a/backend/services/core/migrations/20230822094308_add_custom_author_type_to_articles.ts
+++ b/backend/services/core/migrations/20230822094308_add_custom_author_type_to_articles.ts
@@ -99,7 +99,7 @@ export async function down(knex: Knex): Promise<void> {
   });
   await knex.raw(`
     UPDATE articles
-    SET author_id = authors.member_id
+    SET author_id = authors.member_id,
     author_type = 'Member'
     FROM authors
     WHERE authors.id = articles.author_id
@@ -107,7 +107,7 @@ export async function down(knex: Knex): Promise<void> {
   `);
   await knex.raw(`
     UPDATE articles
-    SET author_id = authors.mandate_id
+    SET author_id = authors.mandate_id,
     author_type = 'Mandate'
     FROM authors
     WHERE authors.id = articles.author_id