diff --git a/module2/exo1/toy_document_orgmode_R_fr.org b/module2/exo1/toy_document_orgmode_R_fr.org
index be8b49149cfd71a73f3ae23717ea910db5ef5f4b..407187420fe64d4972abd057898d8735eec746a5 100644
--- a/module2/exo1/toy_document_orgmode_R_fr.org
+++ b/module2/exo1/toy_document_orgmode_R_fr.org
@@ -9,7 +9,7 @@
 #+HTML_HEAD: <script type="text/javascript" src="http://www.pirilampo.org/styles/lib/js/jquery.stickytableheaders.js"></script>
 #+HTML_HEAD: <script type="text/javascript" src="http://www.pirilampo.org/styles/readtheorg/js/readtheorg.js"></script>
 
-#+PROPERTY: header-args :eval never-export
+#+PROPERTY: header-args :session :exports both
 
 * En demandant à la lib maths