diff --git a/src/main/scala/com/github/unchama/seichiassist/util/BreakUtil.scala b/src/main/scala/com/github/unchama/seichiassist/util/BreakUtil.scala
index 45eb2ce700..be596963f0 100644
--- a/src/main/scala/com/github/unchama/seichiassist/util/BreakUtil.scala
+++ b/src/main/scala/com/github/unchama/seichiassist/util/BreakUtil.scala
@@ -25,7 +25,6 @@ import org.bukkit.World.Environment
 import org.bukkit._
 import org.bukkit.block.Block
 import org.bukkit.entity.{Entity, EntityType, Player}
-import org.bukkit.inventory.ItemStack
 
 import java.util.Random
 import java.util.stream.IntStream