diff --git a/plugins/notifications-backend/migrations/20250317_addTopic.js b/plugins/notifications-backend/migrations/20250317_addTopic.js
index c0010ee096..7a7deed3d7 100644
--- a/plugins/notifications-backend/migrations/20250317_addTopic.js
+++ b/plugins/notifications-backend/migrations/20250317_addTopic.js
@@ -19,7 +19,7 @@ exports.up = async function up(knex) {
   });
 
   await knex.schema.table('user_settings', table => {
-    table.dropUnique(['user', 'channel', 'origin']);
+    table.dropUnique('user_settings_unique_idx');
   });
 
   await knex.schema.alterTable('user_settings', table => {
@@ -31,7 +31,7 @@ exports.up = async function up(knex) {
 
 exports.down = async function down(knex) {
   await knex.schema.table('user_settings', table => {
-    table.dropUnique(['user', 'channel', 'origin', 'topic']);
+    table.dropUnique('user_settings_unique_idx');
   });
 
   await knex.schema.alterTable('user_settings', table => {