diff --git a/FightSystem_Core/src/de/steamwar/fightsystem/record/PacketProcessor.java b/FightSystem_Core/src/de/steamwar/fightsystem/record/PacketProcessor.java
index 65d6f6c..7b20ed8 100644
--- a/FightSystem_Core/src/de/steamwar/fightsystem/record/PacketProcessor.java
+++ b/FightSystem_Core/src/de/steamwar/fightsystem/record/PacketProcessor.java
@@ -67,7 +67,7 @@ public class PacketProcessor {
     private final PacketSource source;
     private final BukkitTask task;
     private final LinkedList<Runnable> syncList = new LinkedList<>();
-    private final Set<Integer> hiddenBlockIds = Config.HiddenBlocks.stream().map(Material::getMaterial).flatMap(m -> BlockIds.impl.materialToAllIds(m).stream()).collect(Collectors.toSet());
+    private final Set<Integer> hiddenBlockIds = Config.HiddenBlocks.stream().map(String::toUpperCase).map(Material::getMaterial).flatMap(m -> BlockIds.impl.materialToAllIds(m).stream()).collect(Collectors.toSet());
     private final int obfuscateWith = BlockIds.impl.materialToId(Material.getMaterial(Config.ObfuscateWith));
     private final FreezeWorld freezer = new FreezeWorld();