diff --git a/src/main/java/de/bixilon/minosoft/Minosoft.kt b/src/main/java/de/bixilon/minosoft/Minosoft.kt
index 68e03a279..59310b38b 100644
--- a/src/main/java/de/bixilon/minosoft/Minosoft.kt
+++ b/src/main/java/de/bixilon/minosoft/Minosoft.kt
@@ -61,7 +61,6 @@ import de.bixilon.minosoft.util.yggdrasil.YggdrasilUtil
 
 
 object Minosoft {
-    val MAIN_THREAD: Thread = Thread.currentThread()
     val MINOSOFT_ASSETS_MANAGER = ResourcesAssetsUtil.create(Minosoft::class.java, canUnload = false)
     val OVERRIDE_ASSETS_MANAGER = ResourcesAssetsUtil.create(Minosoft::class.java, canUnload = false, prefix = "assets_override")
     val LANGUAGE_MANAGER = MultiLanguageManager()
@@ -79,6 +78,7 @@ object Minosoft {
         ModLoader.initModLoading()
         ModLoader.load(LoadingPhases.PRE_BOOT, CountUpAndDownLatch(0))
         ModLoader.await(LoadingPhases.PRE_BOOT)
+
         MINOSOFT_ASSETS_MANAGER.load(CountUpAndDownLatch(0))
 
         warnMacOS()
diff --git a/src/main/java/de/bixilon/minosoft/data/world/chunk/light/BorderSectionLight.kt b/src/main/java/de/bixilon/minosoft/data/world/chunk/light/BorderSectionLight.kt
index 55c38cd4e..b999597b2 100644
--- a/src/main/java/de/bixilon/minosoft/data/world/chunk/light/BorderSectionLight.kt
+++ b/src/main/java/de/bixilon/minosoft/data/world/chunk/light/BorderSectionLight.kt
@@ -13,12 +13,12 @@
 
 package de.bixilon.minosoft.data.world.chunk.light
 
+import de.bixilon.kutil.array.ArrayUtil.getFirst
+import de.bixilon.kutil.array.ArrayUtil.getLast
 import de.bixilon.minosoft.data.direction.Directions
 import de.bixilon.minosoft.data.world.chunk.Chunk
 import de.bixilon.minosoft.data.world.chunk.neighbours.ChunkNeighbours
 import de.bixilon.minosoft.protocol.protocol.ProtocolDefinition
-import de.bixilon.minosoft.util.KUtil.getFirst
-import de.bixilon.minosoft.util.KUtil.getLast
 
 class BorderSectionLight(
     val top: Boolean,
diff --git a/src/main/java/de/bixilon/minosoft/gui/eros/main/mods/ModsController.kt b/src/main/java/de/bixilon/minosoft/gui/eros/main/mods/ModsController.kt
index 8c6c26ce7..431d27b00 100644
--- a/src/main/java/de/bixilon/minosoft/gui/eros/main/mods/ModsController.kt
+++ b/src/main/java/de/bixilon/minosoft/gui/eros/main/mods/ModsController.kt
@@ -13,6 +13,7 @@
 
 package de.bixilon.minosoft.gui.eros.main.mods
 
+import de.bixilon.kutil.collections.CollectionUtil.toNull
 import de.bixilon.minosoft.data.registries.ResourceLocation
 import de.bixilon.minosoft.data.text.TextComponent
 import de.bixilon.minosoft.data.text.TranslatableComponents
@@ -22,7 +23,6 @@ import de.bixilon.minosoft.gui.eros.main.InfoPane
 import de.bixilon.minosoft.modding.loader.ModLoader
 import de.bixilon.minosoft.modding.loader.mod.MinosoftMod
 import de.bixilon.minosoft.util.KUtil.minosoft
-import de.bixilon.minosoft.util.KUtil.toNull
 import javafx.fxml.FXML
 import javafx.scene.control.ListView
 import javafx.scene.layout.Pane
diff --git a/src/main/java/de/bixilon/minosoft/util/KUtil.kt b/src/main/java/de/bixilon/minosoft/util/KUtil.kt
index b98af19ce..674b4025b 100644
--- a/src/main/java/de/bixilon/minosoft/util/KUtil.kt
+++ b/src/main/java/de/bixilon/minosoft/util/KUtil.kt
@@ -318,22 +318,4 @@ object KUtil {
             if (this is CharSequence) return this.length
             return toString().length
         }
-
-    @Deprecated("Kutil 1.18")
-    inline fun <T> Array<T>.getFirst(): T {
-        return this[0]
-    }
-
-    @Deprecated("Kutil 1.18")
-    inline fun <T> Array<T>.getLast(): T {
-        return this[lastIndex]
-    }
-
-    @Deprecated("Kutil 1.18")
-    fun <T : Collection<*>> T.toNull(): T? {
-        if (isEmpty()) {
-            return null
-        }
-        return this
-    }
 }