diff --git a/src/main/java/world/bentobox/level/calculators/IslandLevelCalculator.java b/src/main/java/world/bentobox/level/calculators/IslandLevelCalculator.java
index bca6aff..8904cdf 100644
--- a/src/main/java/world/bentobox/level/calculators/IslandLevelCalculator.java
+++ b/src/main/java/world/bentobox/level/calculators/IslandLevelCalculator.java
@@ -40,9 +40,6 @@ import com.bgsoftware.wildstacker.api.objects.StackedBarrel;
 import com.google.common.collect.Multiset;
 import com.google.common.collect.Multiset.Entry;
 import com.google.common.collect.Multisets;
-import com.songoda.ultimatestacker.UltimateStacker;
-import com.songoda.ultimatestacker.core.compatibility.CompatibleMaterial;
-import com.songoda.ultimatestacker.stackable.block.BlockStack;
 
 import dev.rosewood.rosestacker.api.RoseStackerAPI;
 import us.lynuxcraft.deadsilenceiv.advancedchests.AdvancedChestsAPI;