diff --git a/ch11_blockchain.adoc b/ch11_blockchain.adoc
index 4b892f69..98120281 100644
--- a/ch11_blockchain.adoc
+++ b/ch11_blockchain.adoc
@@ -256,9 +256,9 @@ as _blockstream.info_, and you will find a page describing the contents
 of this block, with a URL containing that hash:
 
 [quote]
-----
+____
 https://blockstream.info/block/000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f
-----
+____
 
 Alternatively, you can get the block using Bitcoin Core on the command line: