diff --git a/apps/server/src/modules/board/controller/api-test/submission-item-lookup.api.spec.ts b/apps/server/src/modules/board/controller/api-test/submission-item-lookup.api.spec.ts
index 6f31d5a4e5a..4686f953d29 100644
--- a/apps/server/src/modules/board/controller/api-test/submission-item-lookup.api.spec.ts
+++ b/apps/server/src/modules/board/controller/api-test/submission-item-lookup.api.spec.ts
@@ -15,7 +15,7 @@ import {
 	userFactory,
 } from '@shared/testing';
 import { ServerTestModule } from '@src/modules/server';
-import { SubmissionsResponse } from '../dto/submission-item/submissions.response';
+import { SubmissionsResponse } from '../dto';
 
 const baseRouteName = '/board-submissions';
 describe('submission item lookup (api)', () => {
diff --git a/apps/server/src/modules/board/controller/dto/element/update-element-content.body.params.ts b/apps/server/src/modules/board/controller/dto/element/update-element-content.body.params.ts
index 5eb0f239c1f..d9b709d8d67 100644
--- a/apps/server/src/modules/board/controller/dto/element/update-element-content.body.params.ts
+++ b/apps/server/src/modules/board/controller/dto/element/update-element-content.body.params.ts
@@ -69,8 +69,6 @@ export class SubmissionContainerContentBody {
 	@IsDate()
 	@IsOptional()
 	@ApiPropertyOptional({
-		required: false,
-		nullable: true,
 		description: 'The point in time until when a submission can be handed in.',
 	})
 	dueDate?: Date;
diff --git a/apps/server/src/modules/board/controller/dto/submission-item/index.ts b/apps/server/src/modules/board/controller/dto/submission-item/index.ts
index b009f3e0560..affa6cedc24 100644
--- a/apps/server/src/modules/board/controller/dto/submission-item/index.ts
+++ b/apps/server/src/modules/board/controller/dto/submission-item/index.ts
@@ -4,5 +4,5 @@ export * from './submission-item.response';
 export * from './submission-item.url.params';
 // TODO for some reason, api generator messes up the types
 // import it directly, not via this index seems to fix it
-// export * from './submissions.response';
+export * from './submissions.response';
 export * from './update-submission-item.body.params';
diff --git a/apps/server/src/modules/board/controller/mapper/submission-item-response.mapper.ts b/apps/server/src/modules/board/controller/mapper/submission-item-response.mapper.ts
index 82d2292ba11..53efb37a482 100644
--- a/apps/server/src/modules/board/controller/mapper/submission-item-response.mapper.ts
+++ b/apps/server/src/modules/board/controller/mapper/submission-item-response.mapper.ts
@@ -1,6 +1,5 @@
 import { SubmissionItem, UserBoardRoles } from '@shared/domain';
-import { SubmissionsResponse } from '../dto/submission-item/submissions.response';
-import { SubmissionItemResponse, TimestampsResponse, UserDataResponse } from '../dto';
+import { SubmissionItemResponse, SubmissionsResponse, TimestampsResponse, UserDataResponse } from '../dto';
 
 export class SubmissionItemResponseMapper {
 	private static instance: SubmissionItemResponseMapper;