diff --git a/core/src/io/anuke/mindustry/world/blocks/distribution/ArmoredConveyor.java b/core/src/io/anuke/mindustry/world/blocks/distribution/ArmoredConveyor.java
index 3f87d9e645..17de588eea 100644
--- a/core/src/io/anuke/mindustry/world/blocks/distribution/ArmoredConveyor.java
+++ b/core/src/io/anuke/mindustry/world/blocks/distribution/ArmoredConveyor.java
@@ -17,7 +17,7 @@ public class ArmoredConveyor extends Conveyor{
 
     @Override
     public boolean blends(Tile tile, int rotation, int otherx, int othery, int otherrot, Block otherblock){
-        return otherblock.outputsItems() && (Point2.equals(tile.x + Geometry.d4(rotation).x, tile.y + Geometry.d4(rotation).y, otherx, othery)
+        return otherblock.outputsItems() && otherblock instanceof Conveyor && (Point2.equals(tile.x + Geometry.d4(rotation).x, tile.y + Geometry.d4(rotation).y, otherx, othery)
         || ((!otherblock.rotate && Edges.getFacingEdge(otherblock, otherx, othery, tile) != null &&
             Edges.getFacingEdge(otherblock, otherx, othery, tile).relativeTo(tile) == tile.rotation()) || Point2.equals(otherx + Geometry.d4(otherrot).x, othery + Geometry.d4(otherrot).y, tile.x, tile.y)));
     }