1 files changed, 4 insertions, 2 deletions
diff --git a/packages/backend/src/server/api/stream/channels/role-timeline.ts b/packages/backend/src/server/api/stream/channels/role-timeline.ts
index 6a4ad22460..fcfa26c38b 100644
--- a/packages/backend/src/server/api/stream/channels/role-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/role-timeline.ts
@@ -8,6 +8,7 @@ import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { bindThis } from '@/decorators.js';
 import { RoleService } from '@/core/RoleService.js';
 import type { GlobalEvents } from '@/core/GlobalEventService.js';
+import type { JsonObject } from '@/misc/json-value.js';
 import Channel, { type MiChannelService } from '../channel.js';
 
 class RoleTimelineChannel extends Channel {
@@ -28,8 +29,9 @@ class RoleTimelineChannel extends Channel {
 	}
 
 	@bindThis
-	public async init(params: any) {
-		this.roleId = params.roleId as string;
+	public async init(params: JsonObject) {
+		if (typeof params.roleId !== 'string') return;
+		this.roleId = params.roleId;
 
 		this.subscriber.on(`roleTimelineStream:${this.roleId}`, this.onEvent);
 	}