diff --git a/ch07.asciidoc b/ch07.asciidoc
index e7fec93c..a48cf43f 100644
--- a/ch07.asciidoc
+++ b/ch07.asciidoc
@@ -1,6 +1,5 @@
 [[blockchain]]
-== The Blockchain__
-
+== The Blockchain
 
 === Introduction