diff --git a/glossary.asciidoc b/glossary.asciidoc
index 316f2033..882f54a0 100644
--- a/glossary.asciidoc
+++ b/glossary.asciidoc
@@ -1,5 +1,5 @@
 [preface]
-=== Quick Glossary
+== Quick Glossary
 
 This quick glossary contains many of the terms used in relation to bitcoin. These terms are used throughout the book, so bookmark this for a quick reference.