diff --git a/packages/strapi-plugin-i18n/config/functions/migrations/__tests__/field.test.js b/packages/strapi-plugin-i18n/config/functions/migrations/__tests__/field.test.js
index 2fa1d029d9..43c046d7cb 100644
--- a/packages/strapi-plugin-i18n/config/functions/migrations/__tests__/field.test.js
+++ b/packages/strapi-plugin-i18n/config/functions/migrations/__tests__/field.test.js
@@ -31,10 +31,7 @@ describe('i18n - Migration - disable localization on a field', () => {
 
       test("Doesn't migrate if no attribute changed (without i18n)", async () => {
         const find = jest.fn();
-        const getLocalizedAttributes = jest
-          .fn()
-          .mockReturnValueOnce([])
-          .mockReturnValueOnce([]);
+        const getLocalizedAttributes = jest.fn(() => []);
 
         global.strapi = {
           query: () => {
@@ -62,10 +59,7 @@ describe('i18n - Migration - disable localization on a field', () => {
 
       test("Doesn't migrate if no attribute changed (with i18n)", async () => {
         const find = jest.fn();
-        const getLocalizedAttributes = jest
-          .fn()
-          .mockReturnValueOnce(['name'])
-          .mockReturnValueOnce(['name']);
+        const getLocalizedAttributes = jest.fn(() => ['name']);
         global.strapi = {
           query: () => {
             find;
diff --git a/packages/strapi-plugin-i18n/config/functions/migrations/field/migrate-for-bookshelf.js b/packages/strapi-plugin-i18n/config/functions/migrations/field/migrate-for-bookshelf.js
index 796e029737..13f403c407 100644
--- a/packages/strapi-plugin-i18n/config/functions/migrations/field/migrate-for-bookshelf.js
+++ b/packages/strapi-plugin-i18n/config/functions/migrations/field/migrate-for-bookshelf.js
@@ -48,7 +48,7 @@ const updateFromTmpTable = async ({ model, trx, attributesToMigrate }) => {
 
 const createTmpTable = async ({ ORM, attributesToMigrate, model }) => {
   const columnsToCopy = ['id', ...attributesToMigrate];
-  await ORM.knex.schema.dropTableIfExists(TMP_TABLE_NAME);
+  await deleteTmpTable({ ORM });
   await ORM.knex.raw(`CREATE TABLE ?? AS ??`, [
     TMP_TABLE_NAME,
     ORM.knex
@@ -65,8 +65,9 @@ const getSortedLocales = async trx => {
   try {
     const defaultLocaleRow = await trx('core_store')
       .select('value')
-      .where({ key: 'plugin_i18n_default_locale' });
-    defaultLocale = defaultLocaleRow[0].value;
+      .where({ key: 'plugin_i18n_default_locale' })
+      .first();
+    defaultLocale = JSON.parse(defaultLocaleRow.value);
   } catch (e) {
     throw new Error("Could not migrate because the default locale doesn't exist");
   }