diff --git a/src/main/java/net/minecraft/server/Block.java b/src/main/java/net/minecraft/server/Block.java
index 290af4796a..d5880a4be4 100644
--- a/src/main/java/net/minecraft/server/Block.java
+++ b/src/main/java/net/minecraft/server/Block.java
@@ -653,9 +653,11 @@ public class Block {
         Item.byId[WATER_LILY.id] = new ItemWaterLily(WATER_LILY.id - 256);
         Item.byId[PISTON.id] = new ItemPiston(PISTON.id - 256);
         Item.byId[PISTON_STICKY.id] = new ItemPiston(PISTON_STICKY.id - 256);
-        Item.byId[BIG_MUSHROOM_1.id] = new ItemWithAuxData(BIG_MUSHROOM_1.id - 256, false); // CraftBukkit
-        Item.byId[BIG_MUSHROOM_2.id] = new ItemWithAuxData(BIG_MUSHROOM_2.id - 256, false); // CraftBukkit
-        Item.byId[MOB_SPAWNER.id] = new ItemWithAuxData(MOB_SPAWNER.id - 256, false); // CraftBukkit
+        // CraftBukkit start
+        Item.byId[BIG_MUSHROOM_1.id] = new ItemWithAuxData(BIG_MUSHROOM_1.id - 256, true);
+        Item.byId[BIG_MUSHROOM_2.id] = new ItemWithAuxData(BIG_MUSHROOM_2.id - 256, true);
+        Item.byId[MOB_SPAWNER.id] = new ItemWithAuxData(MOB_SPAWNER.id - 256, true);
+        // CraftBukkit end
 
         for (int i = 0; i < 256; ++i) {
             if (byId[i] != null) {