diff --git a/common/script/index.js b/common/script/index.js
index aac0735846..cfcffa13f5 100644
--- a/common/script/index.js
+++ b/common/script/index.js
@@ -2338,6 +2338,7 @@ api.wrap = function(user, main) {
           if (analytics != null) {
             analytics.track('acquire item', analyticsData);
           }
+          if (!user._tmp) user._tmp = {}
           return user._tmp.drop = {
             type: 'Quest',
             key: k