diff --git a/src/categories.js b/src/categories.js
index 3883ba3358..063bfc9f99 100644
--- a/src/categories.js
+++ b/src/categories.js
@@ -262,7 +262,7 @@ var	RDB = require('./redis.js'),
 	}
 
 	Categories.getRecentReplies = function(cid, callback) {
-		RDB.zrange('categories:recent_posts:cid:' + cid, 0, -1, function(err, pids) {
+		RDB.zrange('categories:recent_posts:cid:' + cid, 0, 4, function(err, pids) {
 			if (pids.length == 0) {
 				callback(false);
 				return;