diff --git a/src/topics/thumbs.js b/src/topics/thumbs.js
index 09c60f77e4..8a86aeb885 100644
--- a/src/topics/thumbs.js
+++ b/src/topics/thumbs.js
@@ -51,7 +51,7 @@ Thumbs.associate = async function ({ id, path: relativePath, url }) {
 		value = value.replace(nconf.get('upload_path'), '');
 	}
 
-	db.sortedSetAdd(set, numThumbs, value);
+	await db.sortedSetAdd(set, numThumbs, value);
 
 	// Associate thumbnails with the main pid (only on local upload)
 	if (!isDraft && relativePath) {