diff --git a/foundations-high-performance-react.org b/foundations-high-performance-react.org
index 0d6507f..7087c36 100644
--- a/foundations-high-performance-react.org
+++ b/foundations-high-performance-react.org
@@ -60,7 +60,7 @@ React programs-to-come.
 I'm very excited to take you on this journey with me and now it's time
 to learn what lays at the very foundation of React.
 
-* Acknowledgments :frontmatter:
+* Acknowledgments
 :PROPERTIES:
 :EXPORT_FILE_NAME: manuscript/acknowledgments.markua
 :END:
diff --git a/manuscript/Book.txt b/manuscript/Book.txt
index aa49992..f9ad5da 100644
--- a/manuscript/Book.txt
+++ b/manuscript/Book.txt
@@ -1,6 +1,5 @@
 frontmatter.txt
 preface.markua
-frontmatter.txt
 acknowledgments.markua
 mainmatter.txt
 introduction.markua
diff --git a/manuscript/frontmatter.txt b/manuscript/frontmatter.txt
index fc33ee7..f976121 100644
--- a/manuscript/frontmatter.txt
+++ b/manuscript/frontmatter.txt
@@ -1,2 +1 @@
 {frontmatter}
-{frontmatter}