diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/client/render/ILayeredRenderer.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/client/render/ILayeredRenderer.kt
index 0d643672..46941cbb 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/client/render/ILayeredRenderer.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/client/render/ILayeredRenderer.kt
@@ -38,12 +38,12 @@ interface ILayeredRenderer {
 
 fun renderLayeredList(transform: Matrix4fStack, potentialRenderers: List<ILayeredRenderer>): Int {
 	val renderers = ArrayList<ILayeredRenderer>(potentialRenderers.size)
-	var bottomMost = -1
+	var bottomMost = Int.MIN_VALUE
 
 	for (render in potentialRenderers) {
 		val zLevel = render.bottomMostZLevel()
 
-		if (zLevel >= 0) {
+		if (zLevel > Int.MIN_VALUE) {
 			bottomMost = bottomMost.coerceAtLeast(zLevel)
 			renderers.add(render)
 		}
@@ -52,7 +52,7 @@ fun renderLayeredList(transform: Matrix4fStack, potentialRenderers: List<ILayere
 	var lastBottom = bottomMost
 	var renderCalls = 0
 
-	while (lastBottom > 0 && renderers.isNotEmpty()) {
+	while (lastBottom != Int.MIN_VALUE && renderers.isNotEmpty()) {
 		var newBottom = Int.MIN_VALUE
 
 		for (i in renderers.size - 1 downTo 0) {