diff --git a/FightSystem_Core/src/de/steamwar/fightsystem/Config.java b/FightSystem_Core/src/de/steamwar/fightsystem/Config.java
index 86026c6..1123289 100644
--- a/FightSystem_Core/src/de/steamwar/fightsystem/Config.java
+++ b/FightSystem_Core/src/de/steamwar/fightsystem/Config.java
@@ -204,7 +204,7 @@ public class Config {
         ForbiddenItems = Collections.unmodifiableSet(config.getStringList("Kits.ForbiddenItems").stream().map(Material::valueOf).collect(Collectors.toSet()));
 
         TechhiderActive = config.getBoolean("Techhider.Active", false);
-        ObfuscateWith = config.getString("Techhider.ObfuscateWith", "end_stone");
+        ObfuscateWith = config.getString("Techhider.ObfuscateWith", "end_stone").toUpperCase();
         HiddenBlocks = Collections.unmodifiableSet(new HashSet<>(config.getStringList("Techhider.HiddenBlocks")));
         HiddenBlockEntities = Collections.unmodifiableSet(new HashSet<>(config.getStringList("Techhider.HiddenBlockEntities")));
 
diff --git a/FightSystem_Core/src/de/steamwar/fightsystem/utils/TechHiderWrapper.java b/FightSystem_Core/src/de/steamwar/fightsystem/utils/TechHiderWrapper.java
index 35548b1..284c174 100644
--- a/FightSystem_Core/src/de/steamwar/fightsystem/utils/TechHiderWrapper.java
+++ b/FightSystem_Core/src/de/steamwar/fightsystem/utils/TechHiderWrapper.java
@@ -44,7 +44,7 @@ public class TechHiderWrapper extends StateDependent {
 
     public TechHiderWrapper() {
         super(ENABLED, FightState.Schem);
-        techHider = new TechHider(this::bypass, Material.getMaterial(Config.ObfuscateWith), Config.HiddenBlocks.stream().map(Material::getMaterial).collect(Collectors.toSet()), Config.HiddenBlockEntities);
+        techHider = new TechHider(this::bypass, Material.getMaterial(Config.ObfuscateWith), Config.HiddenBlocks.stream().map(String::toUpperCase).map(Material::getMaterial).collect(Collectors.toSet()), Config.HiddenBlockEntities);
         register();
     }