diff --git a/src/Binary.php b/src/Binary.php
index ff27d62..fcfaae7 100644
--- a/src/Binary.php
+++ b/src/Binary.php
@@ -39,7 +39,6 @@
 use const PHP_INT_MAX;
 
 class Binary{
-	private const SIZEOF_BYTE = 1;
 	private const SIZEOF_SHORT = 2;
 	private const SIZEOF_INT = 4;
 	private const SIZEOF_LONG = 8;