diff --git a/src/topics/thumbs.js b/src/topics/thumbs.js
index 75e023fb0c..e8709a46b4 100644
--- a/src/topics/thumbs.js
+++ b/src/topics/thumbs.js
@@ -50,7 +50,7 @@ async function getThumbs(set) {
 		return cached.slice();
 	}
 	const thumbs = await db.getSortedSetRange(set, 0, -1);
-	cache.set(set, thumbs, 600000);
+	cache.set(set, thumbs);
 	return thumbs.slice();
 }