diff --git a/BauSystem_Main/src/de/steamwar/bausystem/features/testblock/DepthCounter.java b/BauSystem_Main/src/de/steamwar/bausystem/features/testblock/DepthCounter.java
index 1efa8eac..383fb837 100644
--- a/BauSystem_Main/src/de/steamwar/bausystem/features/testblock/DepthCounter.java
+++ b/BauSystem_Main/src/de/steamwar/bausystem/features/testblock/DepthCounter.java
@@ -37,7 +37,7 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
 import java.util.Set;
-import java.util.function.BinaryOperator;
+import java.util.function.DoubleBinaryOperator;
 
 @Linked(LinkageType.LISTENER)
 public class DepthCounter implements Listener {
@@ -100,10 +100,10 @@ public class DepthCounter implements Listener {
         return new Vector(vector.getBlockX(), vector.getBlockY(), vector.getBlockZ());
     }
 
-    private void compute(Vector v1, Vector v2, BinaryOperator<Double> function) {
-        v1.setX(function.apply(v1.getX(), v2.getX()));
-        v1.setY(function.apply(v1.getY(), v2.getY()));
-        v1.setZ(function.apply(v1.getZ(), v2.getZ()));
+    private void compute(Vector v1, Vector v2, DoubleBinaryOperator function) {
+        v1.setX(function.applyAsDouble(v1.getX(), v2.getX()));
+        v1.setY(function.applyAsDouble(v1.getY(), v2.getY()));
+        v1.setZ(function.applyAsDouble(v1.getZ(), v2.getZ()));
     }
 
 }