diff --git a/sample-book.pdf b/sample-book.pdf
index 49f682e..35229c9 100644
Binary files a/sample-book.pdf and b/sample-book.pdf differ
diff --git a/sample-handout.pdf b/sample-handout.pdf
index b6cbef0..c68e37a 100644
Binary files a/sample-handout.pdf and b/sample-handout.pdf differ
diff --git a/tufte-common.def b/tufte-common.def
index f71cc52..16e8db9 100644
--- a/tufte-common.def
+++ b/tufte-common.def
@@ -556,7 +556,9 @@
   \ifthenelse{\isempty{#1}}%
     {\renewcommand{\plaintitle}{\thanklesstitle}}% use thankless title
     {\renewcommand{\plaintitle}{#1}}% use provided plain-text title
-  \@ifpackageloaded{hyperref}{\hypersetup{pdftitle={\plaintitle}}}{}% set the PDF metadata title
+  \ifthenelse{\isundefined{\hypersetup}}
+    {}% hyperref isn't loaded; do nothing
+    {\hypersetup{pdftitle={\plaintitle}}}% set the PDF metadata title
 }
 
 \def\@author{}% default author is empty (suppresses LaTeX's ``no author'' warning)
@@ -570,7 +572,9 @@
   \ifthenelse{\isempty{#1}}
     {\renewcommand{\plainauthor}{\thanklessauthor}}% use thankless author
     {\renewcommand{\plainauthor}{#1}}% use provided plain-text author
-  \@ifpackageloaded{hyperref}{\hypersetup{pdfauthor={\plainauthor}}}{}% set the PDF metadata author
+  \ifthenelse{\isundefined{\hypersetup}}
+    {}% hyperref isn't loaded; do nothing
+    {\hypersetup{pdfauthor={\plainauthor}}}% set the PDF metadata author
 }
 
 \renewcommand*{\date}[1]{%