diff --git a/src/game/power-creeps.js b/src/game/power-creeps.js
index dcabece5..ea9485c1 100644
--- a/src/game/power-creeps.js
+++ b/src/game/power-creeps.js
@@ -69,7 +69,7 @@ exports.make = function(_runtimeData, _intents, _register, _globals) {
         carry: _storeGetter,
         store: _storeGetter,
         carryCapacity: o => o.storeCapacity,
-        ticksToLive: (o) => o.ageTime - runtimeData.time,
+        ticksToLive: (o) => o.ageTime ? o.ageTime - runtimeData.time : undefined,
     });
 
     Object.defineProperty(PowerCreep.prototype, 'memory', {
diff --git a/src/processor/global-intents/power/_diePowerCreep.js b/src/processor/global-intents/power/_diePowerCreep.js
index b96f5040..a40718d6 100644
--- a/src/processor/global-intents/power/_diePowerCreep.js
+++ b/src/processor/global-intents/power/_diePowerCreep.js
@@ -54,6 +54,7 @@ module.exports = function(object, {roomObjects, bulkObjects, bulkUsersPowerCreep
 
     bulkUsersPowerCreeps.update(object._id, {
         shard: null,
-        spawnCooldownTime: Date.now() + C.POWER_CREEP_SPAWN_COOLDOWN
+        spawnCooldownTime: Date.now() + C.POWER_CREEP_SPAWN_COOLDOWN,
+        ageTime: undefined,
     });
 };