diff --git a/src/main/java/com/sk89q/worldedit/blocks/BlockType.java b/src/main/java/com/sk89q/worldedit/blocks/BlockType.java
index 7c021a74c..abfd24b3d 100644
--- a/src/main/java/com/sk89q/worldedit/blocks/BlockType.java
+++ b/src/main/java/com/sk89q/worldedit/blocks/BlockType.java
@@ -908,9 +908,9 @@ public enum BlockType {
         // LONG_GRASS
         // DEAD_BUSH
         addIdentity(BlockID.PISTON_BASE);
-        nonDataBlockBagItems.put(BlockID.PISTON_EXTENSION, doNotDestroy); // rule 7
+        // PISTON_EXTENSION, rule 7
         addIdentities(BlockID.CLOTH, 16); // rule 1
-        nonDataBlockBagItems.put(BlockID.PISTON_MOVING_PIECE, doNotDestroy); // rule 7
+        // PISTON_MOVING_PIECE, rule 7
         addIdentity(BlockID.YELLOW_FLOWER); // rule 1
         addIdentity(BlockID.RED_FLOWER); // rule 1
         addIdentity(BlockID.BROWN_MUSHROOM); // rule 1