diff --git a/core/src/mindustry/world/blocks/ConstructBlock.java b/core/src/mindustry/world/blocks/ConstructBlock.java
index f45822964a..a68424552b 100644
--- a/core/src/mindustry/world/blocks/ConstructBlock.java
+++ b/core/src/mindustry/world/blocks/ConstructBlock.java
@@ -358,7 +358,9 @@ public class ConstructBlock extends Block{
                         int target = Mathf.round(requirements[i].amount * state.rules.buildCostMultiplier * state.rules.deconstructRefundMultiplier);
                         int remaining = target - itemsLeft[i];
 
-                        core.items.add(current.requirements[i].item, Mathf.clamp(remaining, 0, core.storageCapacity - core.items.get(current.requirements[i].item)));
+                        if(requirements[i].item.unlockedNowHost()){
+                            core.items.add(requirements[i].item, Mathf.clamp(remaining, 0, core.storageCapacity - core.items.get(requirements[i].item)));
+                        }
                         itemsLeft[i] = target;
                     }
                 }