diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/Starbound.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/Starbound.kt
index fad13193..4cae7643 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/Starbound.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/Starbound.kt
@@ -16,7 +16,6 @@ import ru.dbotthepony.kstarbound.api.ISBFileLocator
 import ru.dbotthepony.kstarbound.api.IStarboundFile
 import ru.dbotthepony.kstarbound.api.NonExistingFile
 import ru.dbotthepony.kstarbound.api.PhysicalFile
-import ru.dbotthepony.kstarbound.api.explore
 import ru.dbotthepony.kstarbound.defs.*
 import ru.dbotthepony.kstarbound.defs.image.AtlasConfiguration
 import ru.dbotthepony.kstarbound.defs.image.ImageReference
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/api/IStarboundFileSystem.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/api/IStarboundFileSystem.kt
index 4fb9d48d..f1f34f20 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/api/IStarboundFileSystem.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/api/IStarboundFileSystem.kt
@@ -61,6 +61,11 @@ interface IStarboundFile : ISBFileLocator {
 		return children?.get(name)
 	}
 
+	fun explore(): Stream<IStarboundFile> {
+		val children = children ?: return Stream.of(this)
+		return Stream.concat(Stream.of(this), children.values.stream().flatMap { it.explore() })
+	}
+
 	fun computeFullPath(): String {
 		var path = name
 		var parent = parent
@@ -224,11 +229,6 @@ class NonExistingFile(
 	}
 }
 
-fun IStarboundFile.explore(): Stream<IStarboundFile> {
-	val children = children ?: return Stream.of(this)
-	return Stream.concat(Stream.of(this), children.values.stream().flatMap { it.explore() })
-}
-
 fun getPathFolder(path: String): String {
 	return path.substringBeforeLast('/')
 }
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/io/StarboundPak.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/io/StarboundPak.kt
index de46e03e..344abb3d 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/io/StarboundPak.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/io/StarboundPak.kt
@@ -1,6 +1,7 @@
 package ru.dbotthepony.kstarbound.io
 
 import it.unimi.dsi.fastutil.objects.Object2ObjectFunction
+import it.unimi.dsi.fastutil.objects.Object2ObjectLinkedOpenHashMap
 import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap
 import ru.dbotthepony.kstarbound.api.IStarboundFile
 import ru.dbotthepony.kstarbound.io.json.BinaryJsonReader
@@ -35,7 +36,7 @@ class StarboundPak(val path: File, callback: (finished: Boolean, status: String)
 			get() = false
 
 		private var frozen = false
-		private val innerChildren = Object2ObjectOpenHashMap<String, IStarboundFile>()
+		private val innerChildren = Object2ObjectLinkedOpenHashMap<String, IStarboundFile>()
 
 		fun put(value: IStarboundFile) {
 			check(!frozen) { "Can't put, already frozen!" }