diff --git a/apps/server/src/modules/school/domain/testing/school.factory.ts b/apps/server/src/modules/school/domain/testing/school.factory.ts
index 4a6e08f53c7..2f800e2b391 100644
--- a/apps/server/src/modules/school/domain/testing/school.factory.ts
+++ b/apps/server/src/modules/school/domain/testing/school.factory.ts
@@ -1,6 +1,7 @@
 import { BaseFactory } from '@shared/testing';
 import { ObjectId } from 'bson';
 import { School, SchoolProps } from '../do';
+import { SchoolFeature } from '../type';
 import { federalStateFactory } from './federal-state.factory';
 import { schoolYearFactory } from './school-year.factory';
 
@@ -10,6 +11,6 @@ export const schoolFactory = BaseFactory.define<School, SchoolProps>(School, ({
 		name: `school #${sequence}`,
 		currentYear: schoolYearFactory.build(),
 		federalState: federalStateFactory.build(),
-		features: new Set(),
+		features: new Set<SchoolFeature>(),
 	};
 });