diff --git a/src/classes/material/IDs.php b/src/classes/material/IDs.php
index e95d576f4..53a4c7533 100644
--- a/src/classes/material/IDs.php
+++ b/src/classes/material/IDs.php
@@ -110,9 +110,10 @@ define("COBBLESTONE_STAIRS", 67);
 define("WALL_SIGN", 68);
 
 define("IRON_DOOR", 71);
-define("REDSTONE_ORE", 72);
-define("GLOWING_REDSTONE_ORE", 73);
-define("LIT_REDSTONE_ORE", 73);
+
+define("REDSTONE_ORE", 73);
+define("GLOWING_REDSTONE_ORE", 74);
+define("LIT_REDSTONE_ORE", 74);
 
 define("SNOW", 78);
 define("SNOW_LAYER", 78);