diff --git a/packages/backend/src/server/api/integration/DiscordServerService.ts b/packages/backend/src/server/api/integration/DiscordServerService.ts
index e6e79f3d3..72e67edf3 100644
--- a/packages/backend/src/server/api/integration/DiscordServerService.ts
+++ b/packages/backend/src/server/api/integration/DiscordServerService.ts
@@ -13,8 +13,8 @@ import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { MetaService } from '@/core/MetaService.js';
 import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { FastifyReplyError } from '@/misc/fastify-reply-error.js';
-import { SigninService } from '../SigninService.js';
 import { bindThis } from '@/decorators.js';
+import { SigninService } from '../SigninService.js';
 
 @Injectable()
 export class DiscordServerService {
@@ -140,7 +140,7 @@ export class DiscordServerService {
 			const oauth2 = await getOAuth2();
 
 			if (!userToken) {
-				const sessid = request.cookies.get('signin_with_discord_sid');
+				const sessid = request.cookies['signin_with_discord_sid'];
 
 				if (!sessid) {
 					throw new FastifyReplyError(400, 'invalid session');
diff --git a/packages/backend/src/server/api/integration/GithubServerService.ts b/packages/backend/src/server/api/integration/GithubServerService.ts
index e6c42e1ee..cea4c6b98 100644
--- a/packages/backend/src/server/api/integration/GithubServerService.ts
+++ b/packages/backend/src/server/api/integration/GithubServerService.ts
@@ -138,7 +138,7 @@ export class GithubServerService {
 			const oauth2 = await getOath2();
 
 			if (!userToken) {
-				const sessid = request.cookies.get('signin_with_github_sid');
+				const sessid = request.cookies['signin_with_github_sid'];
 
 				if (!sessid) {
 					throw new FastifyReplyError(400, 'invalid session');
diff --git a/packages/backend/src/server/api/integration/TwitterServerService.ts b/packages/backend/src/server/api/integration/TwitterServerService.ts
index 747f59c7a..688fa1a5b 100644
--- a/packages/backend/src/server/api/integration/TwitterServerService.ts
+++ b/packages/backend/src/server/api/integration/TwitterServerService.ts
@@ -13,8 +13,8 @@ import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { MetaService } from '@/core/MetaService.js';
 import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { FastifyReplyError } from '@/misc/fastify-reply-error.js';
-import { SigninService } from '../SigninService.js';
 import { bindThis } from '@/decorators.js';
+import { SigninService } from '../SigninService.js';
 
 @Injectable()
 export class TwitterServerService {
@@ -127,7 +127,7 @@ export class TwitterServerService {
 			const twAuth = await getTwAuth();
 
 			if (userToken == null) {
-				const sessid = request.cookies.get('signin_with_twitter_sid');
+				const sessid = request.cookies['signin_with_twitter_sid'];
 
 				if (sessid == null) {
 					throw new FastifyReplyError(400, 'invalid session');