diff --git a/packages/ripple-binary-codec/src/serdes/binary-parser.ts b/packages/ripple-binary-codec/src/serdes/binary-parser.ts
index 52f0d650..534ef52f 100644
--- a/packages/ripple-binary-codec/src/serdes/binary-parser.ts
+++ b/packages/ripple-binary-codec/src/serdes/binary-parser.ts
@@ -7,7 +7,7 @@ import { Buffer } from 'buffer/'
  * BinaryParser is used to compute fields and values from a HexString
  */
 class BinaryParser {
-  public bytes: Buffer
+  private bytes: Buffer
 
   /**
    * Initialize bytes to a hex string