diff --git a/api/db/database-builder/factory/learning-content/build-mission.js b/api/db/database-builder/factory/learning-content/build-mission.js
index d85eba5d280..b410c641bb6 100644
--- a/api/db/database-builder/factory/learning-content/build-mission.js
+++ b/api/db/database-builder/factory/learning-content/build-mission.js
@@ -1,7 +1,7 @@
 import { databaseBuffer } from '../../database-buffer.js';
 
 export function buildMission({
-  id = 'missionIdA',
+  id = 1,
   status = 'status Mission A',
   name_i18n = { fr: 'name FR Mission A', en: 'name EN Mission A' },
   content = { some: 'content' },
diff --git a/api/db/migrations/20241127142253_alter-table-column-id-missions-to-integer.js b/api/db/migrations/20241127142253_alter-table-column-id-missions-to-integer.js
new file mode 100644
index 00000000000..9f1205771a7
--- /dev/null
+++ b/api/db/migrations/20241127142253_alter-table-column-id-missions-to-integer.js
@@ -0,0 +1,30 @@
+const TABLE_NAME = 'missions';
+const SCHEMA_NAME = 'learningcontent';
+/**
+ * @param { import("knex").Knex } knex
+ * @returns { Promise<void> }
+ */
+export async function up(knex) {
+  await knex.schema.withSchema(SCHEMA_NAME).dropTable(TABLE_NAME);
+  await knex.schema.withSchema(SCHEMA_NAME).createTable('missions', function (table) {
+    table.integer('id').primary();
+    table.string('status');
+    table.jsonb('name_i18n');
+    table.jsonb('content');
+    table.jsonb('learningObjectives_i18n');
+    table.jsonb('validatedObjectives_i18n');
+    table.string('introductionMediaType');
+    table.text('introductionMediaUrl');
+    table.jsonb('introductionMediaAlt_i18n');
+    table.text('documentationUrl');
+    table.text('cardImageUrl');
+    table.string('competenceId');
+  });
+}
+
+/**
+ * @returns { Promise<void> }
+ */
+export async function down() {
+  // non
+}