diff --git a/packages/backend/src/core/FeaturedService.ts b/packages/backend/src/core/FeaturedService.ts
index cccbbd95cb..73b3031443 100644
--- a/packages/backend/src/core/FeaturedService.ts
+++ b/packages/backend/src/core/FeaturedService.ts
@@ -52,7 +52,7 @@ export class FeaturedService {
 			`${name}:${currentWindow}`, 0, threshold, 'REV', 'WITHSCORES');
 		redisPipeline.zrange(
 			`${name}:${previousWindow}`, 0, threshold, 'REV', 'WITHSCORES');
-		const [currentRankingResult, previousRankingResult] = await redisPipeline.exec().then(result => result ? result.map(r => r[1] as string[]) : [[], []]);
+		const [currentRankingResult, previousRankingResult] = await redisPipeline.exec().then(result => result ? result.map(r => (r[1] || []) as string[]) : [[], []]);
 
 		const ranking = new Map<string, number>();
 		for (let i = 0; i < currentRankingResult.length; i += 2) {