diff --git a/core/src/mindustry/logic/LExecutor.java b/core/src/mindustry/logic/LExecutor.java
index c7082e4cb1..2e636cf4cd 100644
--- a/core/src/mindustry/logic/LExecutor.java
+++ b/core/src/mindustry/logic/LExecutor.java
@@ -636,6 +636,11 @@ public class LExecutor{
             Object target = exec.obj(from);
             Object sense = exec.obj(type);
 
+            if(target == null && sense == LAccess.dead){
+                exec.setnum(to, 1);
+                return;
+            }
+
             //note that remote units/buildings can be sensed as well
             if(target instanceof Senseable se){
                 if(sense instanceof Content co){
diff --git a/core/src/mindustry/world/blocks/logic/LogicBlock.java b/core/src/mindustry/world/blocks/logic/LogicBlock.java
index 7cd1d031c6..ac597fa1e7 100644
--- a/core/src/mindustry/world/blocks/logic/LogicBlock.java
+++ b/core/src/mindustry/world/blocks/logic/LogicBlock.java
@@ -197,7 +197,7 @@ public class LogicBlock extends Block{
         public LExecutor executor = new LExecutor();
         public float accumulator = 0;
         public Seq<LogicLink> links = new Seq<>();
-        public boolean checkedDuplicates = false, unboxed = false;
+        public boolean checkedDuplicates = false;
 
         public void readCompressed(byte[] data, boolean relative){
             DataInputStream stream = new DataInputStream(new InflaterInputStream(new ByteArrayInputStream(data)));
@@ -254,13 +254,10 @@ public class LogicBlock extends Block{
             super.onProximityAdded();
 
             //unbox buildings after reading
-            if(!unboxed){
-                for(var v : executor.vars){
-                    if(v.objval instanceof BuildingBox b){
-                        v.objval = world.build(b.pos);
-                    }
+            for(var v : executor.vars){
+                if(v.objval instanceof BuildingBox b){
+                    v.objval = world.build(b.pos);
                 }
-                unboxed = true;
             }
         }