diff --git a/packages/hydrooj/src/model/problem.ts b/packages/hydrooj/src/model/problem.ts
index f7e3ac7bd..deb5c00b5 100644
--- a/packages/hydrooj/src/model/problem.ts
+++ b/packages/hydrooj/src/model/problem.ts
@@ -239,6 +239,7 @@ export class ProblemModel {
     }
 
     static async addTestdata(domainId: string, pid: number, name: string, f: Readable | Buffer | string, operator = 1) {
+        name = name.trim();
         if (!name) throw new ValidationError('name');
         const [[, fileinfo]] = await Promise.all([
             document.getSub(domainId, document.TYPE_PROBLEM, pid, 'data', name),
@@ -266,6 +267,7 @@ export class ProblemModel {
         domainId: string, pid: number, name: string,
         f: Readable | Buffer | string, operator = 1, skipUpload = false,
     ) {
+        name = name.trim();
         const [[, fileinfo]] = await Promise.all([
             document.getSub(domainId, document.TYPE_PROBLEM, pid, 'additional_file', name),
             skipUpload ? '' : storage.put(`problem/${domainId}/${pid}/additional_file/${name}`, f, operator),
diff --git a/packages/hydrooj/src/plugin-api.ts b/packages/hydrooj/src/plugin-api.ts
index 26289ead7..8c4917e6a 100644
--- a/packages/hydrooj/src/plugin-api.ts
+++ b/packages/hydrooj/src/plugin-api.ts
@@ -37,6 +37,7 @@ export { Collections } from './service/db';
 // export { Collections } from './interface';
 export { Service, Context } from './context';
 export { buildContent } from './lib/content';
+export { default as rating } from './lib/rating';
 export { default as avatar } from './lib/avatar';
 export { default as rank } from './lib/rank';
 export { default as paginate } from './lib/paginate';