diff --git a/apps/server/src/app.module.ts b/apps/server/src/app.module.ts
index 9d0043a..09aa57d 100644
--- a/apps/server/src/app.module.ts
+++ b/apps/server/src/app.module.ts
@@ -29,7 +29,6 @@ import {
   DingAttendanceRaw,
   SyncLog,
   SyncState,
-  ExpenseType,
   Notification,
  } from './entities';
 import { AuthModule } from './auth/auth.module';
@@ -52,7 +51,6 @@ import { SchedulesModule } from './schedules/schedules.module';
 import { ClassroomRentalsModule } from './classroom-rentals/classroom-rentals.module';
 import { SyncModule } from './sync/sync.module';
 import { NotificationsModule } from './notifications/notifications.module';
-import { ExpenseTypesModule } from './expense-types/expense-types.module';
 
 @Module({
   imports: [
@@ -94,7 +92,6 @@ import { ExpenseTypesModule } from './expense-types/expense-types.module';
           DingAttendanceRaw,
           SyncLog,
           SyncState,
-          ExpenseType,
           Notification,
          ];
         if (dbType === 'mysql') {
@@ -135,7 +132,6 @@ import { ExpenseTypesModule } from './expense-types/expense-types.module';
     SchedulesModule,
     ClassroomRentalsModule,
     SyncModule,
-    ExpenseTypesModule,
     NotificationsModule,
   ],
   providers: [
diff --git a/apps/server/src/notifications/notifications.service.ts b/apps/server/src/notifications/notifications.service.ts
index 4191459..3bb5d00 100644
--- a/apps/server/src/notifications/notifications.service.ts
+++ b/apps/server/src/notifications/notifications.service.ts
@@ -46,7 +46,7 @@ export class NotificationsService {
       .orderBy('n.createdAt', 'DESC')
       .take(limit);
 
-    if (after) {
+    if (after !== undefined) {
       qb.andWhere('n.id < :after', { after });
     }