diff --git a/backend/src/graphql/resolvers/BalanceResolver.ts b/backend/src/graphql/resolvers/BalanceResolver.ts
index c483ad5c9..27e0d4890 100644
--- a/backend/src/graphql/resolvers/BalanceResolver.ts
+++ b/backend/src/graphql/resolvers/BalanceResolver.ts
@@ -1,13 +1,17 @@
-import { Resolver, Query, /* Mutation, */ Arg } from 'type-graphql'
+/* eslint-disable @typescript-eslint/no-explicit-any */
+/* eslint-disable @typescript-eslint/explicit-module-boundary-types */
+
+import { Resolver, Query, Ctx, Authorized } from 'type-graphql'
 import CONFIG from '../../config'
 import { Balance } from '../models/Balance'
 import { apiGet } from '../../apis/loginAPI'
 
 @Resolver()
 export class BalanceResolver {
+  @Authorized()
   @Query(() => Balance)
-  async balance(@Arg('sessionId') sessionId: number): Promise<Balance> {
-    const result = await apiGet(CONFIG.COMMUNITY_API_URL + 'getBalance/' + sessionId)
+  async balance(@Ctx() context: any): Promise<Balance> {
+    const result = await apiGet(CONFIG.COMMUNITY_API_URL + 'getBalance/' + context.sessionId)
     if (!result.success) throw new Error(result.data)
     return new Balance(result.data)
   }