diff --git a/module2/exo1/toy_document_orgmode_python_en.org b/module2/exo1/toy_document_orgmode_python_en.org
index 058e29b1a91c8b17cc72fc54dbdd27dd01869fde..a82e02d0a9daacdd8227e0016365007252098ed9 100644
--- a/module2/exo1/toy_document_orgmode_python_en.org
+++ b/module2/exo1/toy_document_orgmode_python_en.org
@@ -27,7 +27,7 @@ pi
 #+RESULTS:
 
 * 2. *Buffon's needle
-Applying the method of [[https://en.wikipedia.org/wiki/Buffon%27s_needle_problem][_Buffon's needle_]], we get the *approximation*
+Applying the method of [[https://en.wikipedia.org/wiki/Buffon%27s_needle_problem][-Buffon's needle-]], we get the *approximation*
 #+begin_src python :results output :exports both
 import numpy as np
 np.random.seed(seed=42)