diff --git a/src/flags.js b/src/flags.js
index ede0871b83..9022af2c45 100644
--- a/src/flags.js
+++ b/src/flags.js
@@ -338,7 +338,7 @@ Flags.create = function (type, id, uid, reason, timestamp, callback) {
 			if (type === 'post') {
 				tasks.push(async.apply(db.sortedSetAdd.bind(db), 'flags:byPid:' + id, timestamp, flagId));	// by target pid
 				if (targetUid) {
-					tasks.push(async.apply(db.sortedSetIncrBy, 'users:flags', 1, targetUid));
+					tasks.push(async.apply(db.sortedSetIncrBy.bind(db), 'users:flags', 1, targetUid));
 				}
 			}