diff --git a/packages/backend/src/services/instance-actor.ts b/packages/backend/src/services/instance-actor.ts
index 6d46fc24c..874952be0 100644
--- a/packages/backend/src/services/instance-actor.ts
+++ b/packages/backend/src/services/instance-actor.ts
@@ -1,28 +1,20 @@
 import { IsNull } from 'typeorm';
 import { ILocalUser } from '@/models/entities/user.js';
 import { Users } from '@/models/index.js';
-import { Cache } from '@/misc/cache.js';
 import { createSystemUser } from './create-system-user.js';
 
 const ACTOR_USERNAME = 'instance.actor' as const;
 
-const cache = new Cache<ILocalUser>(Infinity);
+let instanceActor = await Users.findOneBy({
+	host: IsNull(),
+	username: ACTOR_USERNAME,
+}) as ILocalUser | undefined;
 
 export async function getInstanceActor(): Promise<ILocalUser> {
-	const cached = cache.get(null);
-	if (cached) return cached;
-
-	const user = await Users.findOneBy({
-		host: IsNull(),
-		username: ACTOR_USERNAME,
-	}) as ILocalUser | undefined;
-
-	if (user) {
-		cache.set(null, user);
-		return user;
+	if (instanceActor) {
+		return instanceActor;
 	} else {
-		const created = await createSystemUser(ACTOR_USERNAME) as ILocalUser;
-		cache.set(null, created);
+		instanceActor = await createSystemUser(ACTOR_USERNAME) as ILocalUser;
 		return created;
 	}
 }