diff --git a/ch00.asciidoc b/ch00.asciidoc
index 038824a7..c9bf90ec 100644
--- a/ch00.asciidoc
+++ b/ch00.asciidoc
@@ -50,8 +50,8 @@ network::
 ((("network")))
 	A peer-to-peer network that propagates transactions and blocks among all nodes
 	
-blochchain::
-((("blochchain")))
+blockchain::
+((("blockchain")))
 	A list of validated blocks, each linking to its predecessor all the way to the genesis block.
 	
 genesis block::