diff --git a/common/script/ops/scoreTask.js b/common/script/ops/scoreTask.js
index 0508462773..f052b954e0 100644
--- a/common/script/ops/scoreTask.js
+++ b/common/script/ops/scoreTask.js
@@ -194,6 +194,7 @@ module.exports = function scoreTask (options = {}, req = {}) {
     }
     _gainMP(user, _.max([0.25, 0.0025 * user._statsComputed.maxMP]) * (direction === 'down' ? -1 : 1));
 
+    task.history = task.history || [];
     // Add history entry, even more than 1 per day
     task.history.push({
       date: Number(new Date()),