diff --git a/libs/Processor.lua b/libs/Processor.lua
index 2701cce..5a551f0 100644
--- a/libs/Processor.lua
+++ b/libs/Processor.lua
@@ -517,7 +517,9 @@ function Processor.processPendingUpgrades(tick)
     local entity = entityData.entity
     if not entity.valid then
         Universe.pendingUpgrades[entityId] = nil
+        return
     end
+
     if entityData.delayTLL and tick < entityData.delayTLL then
         return
     end