From 62f4513b40ebb1b7f797acbfea3497fed3a78b43 Mon Sep 17 00:00:00 2001
From: "David A. Harding" <dave@dtrt.org>
Date: Fri, 30 Oct 2015 10:38:36 -0400
Subject: [PATCH] Dev Docs: RPCs: GetBlock: Correct prevblock field

The genesis block results don't return this field.
---
 _includes/devdoc/bitcoin-core/rpcs/rpcs/getblock.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/_includes/devdoc/bitcoin-core/rpcs/rpcs/getblock.md b/_includes/devdoc/bitcoin-core/rpcs/rpcs/getblock.md
index e6d7c87e..dd1c73d6 100644
--- a/_includes/devdoc/bitcoin-core/rpcs/rpcs/getblock.md
+++ b/_includes/devdoc/bitcoin-core/rpcs/rpcs/getblock.md
@@ -118,8 +118,8 @@ The `getblock` RPC {{summary_getBlock}}
 
 - n: "→<br>`previousblockhash`"
   t: "string (hex)"
-  p: "Required<br>(exactly 1)"
-  d: "The hash of the header of the previous block, encoded as hex in RPC byte order"
+  p: "Optional<br>(0 or 1)"
+  d: "The hash of the header of the previous block, encoded as hex in RPC byte order.  Not returned for genesis block"
 
 - n: "→<br>`nextblockhash`"
   t: "string (hex)"