diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/io/BTreeDB.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/io/BTreeDB.kt
index bb4c9f40..01d76cc6 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/io/BTreeDB.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/io/BTreeDB.kt
@@ -30,9 +30,9 @@ private operator fun ByteArray.compareTo(b: ByteArray): Int {
 	require(size == b.size) { "Keys are not of same size (${size} vs ${b.size})" }
 
 	for (i in indices) {
-		if (this[i] > b[i]) {
+		if (this[i].toInt() and 0xFF > b[i].toInt() and 0xFF) {
 			return 1
-		} else if (this[i] < b[i]) {
+		} else if (this[i].toInt() and 0xFF < b[i].toInt() and 0xFF) {
 			return -1
 		}
 	}