diff --git a/src/topics/unread.js b/src/topics/unread.js
index be4a548226..b9392d3eda 100644
--- a/src/topics/unread.js
+++ b/src/topics/unread.js
@@ -180,7 +180,7 @@ module.exports = function(Topics) {
 			}
 
 			var now = Date.now();
-			var scores = tids.map(function(tid) {
+			var scores = tids.map(function() {
 				return now;
 			});