From c13421a9a7d13585b0558e1c4a8a0221d97d3c2d Mon Sep 17 00:00:00 2001
From: Danny Ryan <dannyjryan@gmail.com>
Date: Wed, 22 May 2019 16:52:44 -0400
Subject: [PATCH] type hinting for fork version

Co-Authored-By: Hsiao-Wei Wang <hwwang156@gmail.com>
---
 specs/core/0_beacon-chain.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/specs/core/0_beacon-chain.md b/specs/core/0_beacon-chain.md
index c14228dc1..60f774e9a 100644
--- a/specs/core/0_beacon-chain.md
+++ b/specs/core/0_beacon-chain.md
@@ -633,7 +633,7 @@ The `hash` function is SHA256.
 ### `bls_domain`
 
 ```python
-def bls_domain(domain_type: int, fork_version=b'\x00\x00\x00\x00') -> int:
+def bls_domain(domain_type: int, fork_version: bytes=b'\x00\x00\x00\x00') -> int:
     """
     Return the bls domain given by the ``domain_type`` and optional 4 byte ``fork_version`` (defaults to zero).
     """