diff --git a/slides_template/Makefile b/slides_template/Makefile
index 0d15514..a8013a1 100644
--- a/slides_template/Makefile
+++ b/slides_template/Makefile
@@ -36,6 +36,8 @@ vc:
 clean: 
 	latexmk -C *.tex
 	rm -f *.tmp
+	rm -f *.nav
+	rm -f *.snm
 	rm -f vc
 	rm -f notes.config
 	rm -f *.pdfpc