diff --git a/makefile b/makefile
index 49855a7..edd1def 100644
--- a/makefile
+++ b/makefile
@@ -1,5 +1,5 @@
 # Build a release of tperimeter using 'make'
-# $Id: makefile,v 1.109 2006/05/01 01:12:07 tundra Exp $
+# $Id: makefile,v 1.110 2006/05/01 05:15:21 tundra Exp $
 # Requires a modern 'make' like GNU.
 
 
@@ -53,6 +53,9 @@
 %.latex: %.txt
 	rst2latex.py $< >$@
 
+%.pdf: %.dvi
+	@dvipdf $< $@
+
 %.pdf: %.ps
 	@gs -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile=$@ $<