diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2bb021317d..c35aa3679f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,8 @@
 ### Server
 - Fix: Nested proxy requestsを検出した際にブロックするように
   [ghsa-gq5q-c77c-v236](https://github.com/misskey-dev/misskey/security/advisories/ghsa-gq5q-c77c-v236)
+- Fix: 招待コードの発行可能な残り数算出に使用すべきロールポリシーの値が違う問題を修正  
+  (Cherry-picked from https://activitypub.software/TransFem-org/Sharkey/-/merge_requests/706)
 
 ## 2024.10.1
 
diff --git a/packages/backend/src/server/api/endpoints/invite/limit.ts b/packages/backend/src/server/api/endpoints/invite/limit.ts
index 2786bd98d5..2ffd41ae28 100644
--- a/packages/backend/src/server/api/endpoints/invite/limit.ts
+++ b/packages/backend/src/server/api/endpoints/invite/limit.ts
@@ -49,7 +49,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			const policies = await this.roleService.getUserPolicies(me.id);
 
 			const count = policies.inviteLimit ? await this.registrationTicketsRepository.countBy({
-				id: MoreThan(this.idService.gen(Date.now() - (policies.inviteExpirationTime * 60 * 1000))),
+				id: MoreThan(this.idService.gen(Date.now() - (policies.inviteLimitCycle * 60 * 1000))),
 				createdById: me.id,
 			}) : null;