diff --git a/packages/backend/src/server/api/stream/Connection.ts b/packages/backend/src/server/api/stream/Connection.ts
index 3924723890..7f15c3a2db 100644
--- a/packages/backend/src/server/api/stream/Connection.ts
+++ b/packages/backend/src/server/api/stream/Connection.ts
@@ -209,7 +209,7 @@ export default class Connection {
 		// 自分自身ではないかつ
 		if (data.body.userId !== this.user?.id) {
 			// 公開範囲が指名で自分が含まれてない
-			if (data.body.visibility === 'specified' && !data.body.visibleUserIds.includes(this.user?.id ?? '')) {
+			if (data.body.visibility === 'specified' && (this.user == null || !data.body.visibleUserIds.includes(this.user.id))) {
 				return;
 			}