diff --git a/core/src/mindustry/ai/Pathfinder.java b/core/src/mindustry/ai/Pathfinder.java
index 6796a7156b..509ca0c03d 100644
--- a/core/src/mindustry/ai/Pathfinder.java
+++ b/core/src/mindustry/ai/Pathfinder.java
@@ -465,7 +465,7 @@ public class Pathfinder implements Runnable{
         protected abstract void getPositions(IntSeq out);
     }
 
-    interface PathCost{
+    public interface PathCost{
         int getCost(Team traversing, int tile);
     }