diff --git a/Makefile b/Makefile
index e6e5a488df12cbedd208da1e356f673f6c03aa2b..782e6bd7814e568b2534a043ef077ba5935a23b0 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,8 @@
 all: slides.pdf
 
 slides.pdf: slides.tex
-	rubber --pdf slides.tex
+	rubber --pdf slides
 
 clean:
-	rm slides.pdf
+	rubber --pdf --clean slides
+	rm -f slides.vrb