diff --git a/index.html b/index.html
index 3b6f63a..58d2dda 100644
--- a/index.html
+++ b/index.html
@@ -380,7 +380,7 @@
         <block type="blocks_boundingbox"> </block>
         <block type="blocks_creativetab"> </block>
       </category>
-      <category name="World" colour="#22aabb">
+      <category name="World (C)" colour="#22aabb">
         <block type="world_explosion"> </block>
         <block type="world_command"> </block>
       </category>