diff --git a/BauSystem_Main/src/de/steamwar/bausystem/features/testblock/depthcounter/DepthCounterListener.java b/BauSystem_Main/src/de/steamwar/bausystem/features/testblock/depthcounter/DepthCounterListener.java
index 99778878..47f98554 100644
--- a/BauSystem_Main/src/de/steamwar/bausystem/features/testblock/depthcounter/DepthCounterListener.java
+++ b/BauSystem_Main/src/de/steamwar/bausystem/features/testblock/depthcounter/DepthCounterListener.java
@@ -40,15 +40,12 @@ public class DepthCounterListener implements Listener {
 	@EventHandler
 	public void onEntityExplode(EntityExplodeEvent event) {
 		Region region = Region.getRegion(event.getLocation());
-		boolean testblock = event.blockList().stream().anyMatch(block -> region.inRegion(block.getLocation(), RegionType.TESTBLOCK, RegionExtensionType.NORMAL));
+		boolean testblock = event.blockList().stream().anyMatch(block -> region.inRegion(block.getLocation(), RegionType.TESTBLOCK, RegionExtensionType.EXTENSION));
 		if (!testblock) {
 			return;
 		}
 
-		if (!DepthCounter.depthMap.containsKey(region)) {
-			DepthCounter.depthMap.put(region, new HashSet<>());
-		}
-
+		DepthCounter.depthMap.computeIfAbsent(region, r -> new HashSet<>());
 		Set<Depth> depthSet = DepthCounter.depthMap.get(region);
 		for (Depth depth : depthSet) {
 			if (depth.update(event.blockList())) {