diff --git a/doc/Makefile b/doc/Makefile
index ae393530..83e5812d 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -3,10 +3,10 @@ serve: venv
 
 build: venv public_html LdapSaisie.html
 
-public_html:
+public_html: venv
 	venv/bin/mkdocs build -s
 
-LdapSaisie.html: public_html
+LdapSaisie.html: venv public_html
 	venv/bin/htmlark public_html/print_page/index.html -o LdapSaisie.html
 
 venv: