diff --git a/packages/backend/src/core/entities/DriveFileEntityService.ts b/packages/backend/src/core/entities/DriveFileEntityService.ts
index f769ddd5e99df2d47a24266da1afd321ac31c6a5..b750606f1ec29d071baf9df74f25c5c4f0ea21d5 100644
--- a/packages/backend/src/core/entities/DriveFileEntityService.ts
+++ b/packages/backend/src/core/entities/DriveFileEntityService.ts
@@ -89,9 +89,7 @@ export class DriveFileEntityService {
 		if (file.type.startsWith('video')) {
 			if (file.thumbnailUrl) return file.thumbnailUrl;
 
-			if (this.config.videoThumbnailGenerator == null) {
-				return this.videoProcessingService.getExternalVideoThumbnailUrl(file.webpublicUrl ?? file.url ?? file.uri);
-			}
+			return this.videoProcessingService.getExternalVideoThumbnailUrl(file.webpublicUrl ?? file.url ?? file.uri);
 		} else if (file.uri != null && file.userHost != null && this.config.externalMediaProxyEnabled) {
 			// 動画ではなくリモートかつメディアプロキシ
 			return this.getProxiedUrl(file.uri, 'static');