diff --git a/module2/ressources/rr_org/init.el b/module2/ressources/rr_org/init.el
index a2eca423d99027b948983feab07fbd39269d8074..4503d3a9f4a55f55c16d3975d694d00f35dcc4a4 100644
--- a/module2/ressources/rr_org/init.el
+++ b/module2/ressources/rr_org/init.el
@@ -25,6 +25,8 @@
 
 (require 'org)
 
+(require 'ess-site)
+
 (setq inhibit-splash-screen t)
 
 (setq frame-title-format
diff --git a/module2/ressources/rr_org/init.org b/module2/ressources/rr_org/init.org
index 46e7838010b4a85cb6bab1aa7210634e1fcbdfd8..19aa9f639cab2b580723aee56ae8e919349a1e06 100644
--- a/module2/ressources/rr_org/init.org
+++ b/module2/ressources/rr_org/init.org
@@ -52,6 +52,11 @@ document, simply =M-x org-babel-tangle=.
 #+begin_src emacs-lisp :tangle init.el
 (require 'org)
 #+end_src
+** Loading ESS (Emacs support for R)
+This seems to be needed on some platforms.
+#+begin_src emacs-lisp :tangle init.el
+(require 'ess-site)
+#+end_src
 * Emacs aesthetics:
 ** Remove splash screen:						:WEB:
 #+begin_src emacs-lisp :tangle init.el