diff --git a/core/assets/maps/three.msav b/core/assets/maps/three.msav
index 5f308e88e6..86eeaec8b7 100644
Binary files a/core/assets/maps/three.msav and b/core/assets/maps/three.msav differ
diff --git a/core/src/mindustry/world/blocks/distribution/DuctBridge.java b/core/src/mindustry/world/blocks/distribution/DuctBridge.java
index 15abdc4f88..d381c56992 100644
--- a/core/src/mindustry/world/blocks/distribution/DuctBridge.java
+++ b/core/src/mindustry/world/blocks/distribution/DuctBridge.java
@@ -49,6 +49,9 @@ public class DuctBridge extends DirectionBridge{
 
         @Override
         public boolean acceptItem(Building source, Item item){
+            //only accept if there's an output point.
+            if(findLink() == null) return false;
+
             int rel = this.relativeToEdge(source.tile);
             return items.total() < itemCapacity && rel != rotation && occupied[(rel + 2) % 4] == null;
         }