diff --git a/slides/Makefile b/slides/Makefile
index ccd24841d22240640f393331325964aac3a90894..30fa8287927067c8335a8ee9eafa5b7be1c626e5 100644
--- a/slides/Makefile
+++ b/slides/Makefile
@@ -65,6 +65,6 @@ deploy: all
 	cp *.pdf algo_cours
 
 clean:
-	rm -f *.pdf *.markdown yq_linux_amd64* index.md .puppeteer.json
+	rm -f *.html *.pdf *.markdown yq_linux_amd64* index.md .puppeteer.json
 
 .PHONY:	clean index puppeteer yq