diff --git a/sample-book.pdf b/sample-book.pdf
index 49f8e52..244ee2d 100644
Binary files a/sample-book.pdf and b/sample-book.pdf differ
diff --git a/sample-handout.pdf b/sample-handout.pdf
index d5651cf..a2a8787 100644
Binary files a/sample-handout.pdf and b/sample-handout.pdf differ
diff --git a/tufte-book.cls b/tufte-book.cls
index f76d8bc..b0ee6a0 100644
--- a/tufte-book.cls
+++ b/tufte-book.cls
@@ -42,11 +42,11 @@
   \ifthenelse{\boolean{@tufte@twoside}}%
     {% two-side
       \renewcommand{\chaptermark}[1]{\markboth{##1}{}}%
-      \fancyhead[LE]{\thepage\quad\smallcaps{\plaintitle}}% book title
-      \fancyhead[RO]{\smallcaps{\leftmark}\quad\thepage}% chapter title
+      \fancyhead[LE]{\thepage\quad\smallcaps{\newlinetospace{\plaintitle}}}% book title
+      \fancyhead[RO]{\smallcaps{\newlinetospace{\leftmark}}\quad\thepage}% chapter title
     }%
     {% one-side
-      \fancyhead[RE,RO]{\smallcaps{\plaintitle}\quad\thepage}% book title
+      \fancyhead[RE,RO]{\smallcaps{\newlinetospace{\plaintitle}}\quad\thepage}% book title
     }%
 }