diff --git a/src/main/java/com/sk89q/worldedit/blocks/BlockType.java b/src/main/java/com/sk89q/worldedit/blocks/BlockType.java
index 461e93016..33252cc28 100644
--- a/src/main/java/com/sk89q/worldedit/blocks/BlockType.java
+++ b/src/main/java/com/sk89q/worldedit/blocks/BlockType.java
@@ -432,6 +432,7 @@ public enum BlockType {
         usesData.add(BlockID.REDSTONE_REPEATER_OFF);
         usesData.add(BlockID.REDSTONE_REPEATER_ON);
         usesData.add(BlockID.TRAP_DOOR);
+        usesData.add(BlockID.SILVERFISH_BLOCK);
         usesData.add(BlockID.STONE_BRICK);
         usesData.add(BlockID.RED_MUSHROOM_CAP);
         usesData.add(BlockID.BROWN_MUSHROOM_CAP);
diff --git a/src/main/java/com/sk89q/worldedit/data/BlockData.java b/src/main/java/com/sk89q/worldedit/data/BlockData.java
index 3a1ccf8f8..45143eea5 100644
--- a/src/main/java/com/sk89q/worldedit/data/BlockData.java
+++ b/src/main/java/com/sk89q/worldedit/data/BlockData.java
@@ -493,6 +493,7 @@ public final class BlockData {
         case BlockID.LOG:
         case BlockID.LONG_GRASS:
         case BlockID.STONE_BRICK:
+        case BlockID.SILVERFISH_BLOCK:
             return (data + increment) % 3;
 
         case BlockID.TORCH: