diff --git a/ch09.asciidoc b/ch09.asciidoc
index 27c16858..c28b9df0 100644
--- a/ch09.asciidoc
+++ b/ch09.asciidoc
@@ -117,7 +117,11 @@ The genesis block contains a hidden message within it. The coinbase transaction
 
 Bitcoin full nodes maintain a local copy of the blockchain, starting at the genesis block. The local copy of the blockchain is constantly updated as new blocks are found and used to extend the chain. As a node receives incoming blocks from the network, it will validate these blocks and then link them to the existing blockchain. To establish a link, a node will examine the incoming block header and look for the "previous block hash."
 
-Let's assume, for example, that a node has 277,314 blocks in the local copy of the blockchain. The last block the node knows about is block 277,314, with a block header hash of +00000000000000027e7ba6fe7bad39faf3b5a83daed765f05f7d1b71a1632249+.
+Let's assume, for example, that a node has 277,314 blocks in the local copy of the blockchain. The last block the node knows about is block 277,314, with a block header hash of:
+
+----
+00000000000000027e7ba6fe7bad39faf3b5a83daed765f05f7d1b71a1632249
+----
 
 The bitcoin node then receives a new block from the network, which it parses as follows: