diff --git a/slides/Makefile b/slides/Makefile
index db66653..55acb13 100644
--- a/slides/Makefile
+++ b/slides/Makefile
@@ -4,7 +4,7 @@ all: $(TEX)
 	pdflatex $(TEX)
 	pdflatex $(TEX)
 
-upload:
+upload: all
 	scp $(BASE).pdf www.tobast:~/tobast.fr/public_html/l3/slides.pdf