diff --git a/BauSystem/BauSystem_Main/src/de/steamwar/bausystem/region/GameModeConfig.java b/BauSystem/BauSystem_Main/src/de/steamwar/bausystem/region/GameModeConfig.java
index e0197661..82d59036 100644
--- a/BauSystem/BauSystem_Main/src/de/steamwar/bausystem/region/GameModeConfig.java
+++ b/BauSystem/BauSystem_Main/src/de/steamwar/bausystem/region/GameModeConfig.java
@@ -121,7 +121,7 @@ public class GameModeConfig {
         private void load(ConfigurationSection section) {
             Active = section.getBoolean("Active", false);
             ObfuscateWith = Material.getMaterial(section.getString("ObfuscateWith", "END_STONE"));
-            HiddenBlocks = section.getStringList("HiddenBlocks").stream().map(FlatteningWrapper.impl::getMaterial).filter(Objects::nonNull).collect(Collectors.toUnmodifiableSet());
+            HiddenBlocks = section.getStringList("HiddenBlocks").stream().map(String::toUpperCase).map(FlatteningWrapper.impl::getMaterial).filter(Objects::nonNull).collect(Collectors.toUnmodifiableSet());
             HiddenBlockEntities = Collections.unmodifiableSet(new HashSet<>(section.getStringList("HiddenBlockEntities")));
         }
     }