diff --git a/pdf/book.tplx b/pdf/book.tplx
index 8ea50a8..d931cf5 100644
--- a/pdf/book.tplx
+++ b/pdf/book.tplx
@@ -11,6 +11,7 @@
 ((* endblock docclass *))
  
 ((* block preamble *))
+
 ((* endblock preamble *))
  
 ((* block title *))
@@ -19,6 +20,7 @@
 ((* endblock title *))
 
 ((* block markdowncell scoped *))
+\normalem
 \setlength{\parindent}{0em}
 \setlength{\parskip}{0.5em}
     ((( cell.source | citation2latex | strip_files_prefix | markdown2latex(extra_args=["--chapters"]) )))