diff --git a/winsup/doc/ChangeLog b/winsup/doc/ChangeLog
index 695151a0e..7d3c0e2d8 100644
--- a/winsup/doc/ChangeLog
+++ b/winsup/doc/ChangeLog
@@ -1,3 +1,9 @@
+2014-10-28  Corinna Vinschen  <corinna@vinschen.de>
+
+	* xidepend: Make PDF file dependent on the same input files as the
+	HTML file of the same name to trigger automatic rebuild of PDFs on
+	source file changes as well.
+
 2014-10-28  Corinna Vinschen  <corinna@vinschen.de>
 
 	* cygwinenv.xml: Change default setting of dosfilewarning.
diff --git a/winsup/doc/xidepend b/winsup/doc/xidepend
index 2a1fc831d..d3b233a57 100755
--- a/winsup/doc/xidepend
+++ b/winsup/doc/xidepend
@@ -15,7 +15,7 @@ do
 	then
 		# This file uses XIncludes.  Let's chase its deps recursively.
 		base=`basename "$f" .xml`
-		if [ $subproc -eq 0 ] ; then echo -n "$base/$base.html:" ; fi
+		if [ $subproc -eq 0 ] ; then echo -n "$base/$base.html $base/$base.pdf:" ; fi
 
 		deps=`grep 'xi:include.*href' "$f" | cut -f2 -d\" | tr '\n' ' '`
 		echo -n " $deps"