diff --git a/ch09.asciidoc b/ch09.asciidoc
index cc2ae567..06e72589 100644
--- a/ch09.asciidoc
+++ b/ch09.asciidoc
@@ -81,7 +81,7 @@ The following identifier hash belongs to the genesis block:
 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f
 ----
 
-You can search for that block hash in any block explorer website, such as blockchain.info, and you will find a page describing the contents of this block, with a URL containing that hash:
+You can search for that block hash in any block explorer website, such as _blockchain.info_, and you will find a page describing the contents of this block, with a URL containing that hash:
 
 https://blockchain.info/block/000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f