diff --git a/module2/exo1/toy_document_en.Rmd b/module2/exo1/toy_document_en.Rmd
index 6a551052e8aca277c91b291b9826525ed8464b6e..02a6e7c42b9ab9548ed1d2de5f84b0d099ec16cc 100644
--- a/module2/exo1/toy_document_en.Rmd
+++ b/module2/exo1/toy_document_en.Rmd
@@ -17,7 +17,7 @@ pi
 ```
 
 ## Buffon's needle
-Applying the method of [Buffon's needle](https://en.wikipedia.org/wiki/Buffon%27s_needle_problem), we get the __approximation__)
+Applying the method of [Buffon's needle](https://en.wikipedia.org/wiki/Buffon%27s_needle_problem), we get the __approximation__
 
 ```{r}
 set.seed(42)
diff --git a/module2/exo1/toy_document_en.html b/module2/exo1/toy_document_en.html
index 80f4d8cc19e763291455a344c43a25403afff87d..429eaf7f9766c22aaf03576c9db100a6c7a7bdab 100644
--- a/module2/exo1/toy_document_en.html
+++ b/module2/exo1/toy_document_en.html
@@ -389,7 +389,7 @@ $(document).ready(function () {
 </div>
 <div id="buffons-needle" class="section level2">
 <h2>Buffon’s needle</h2>
-<p>Applying the method of <a href="https://en.wikipedia.org/wiki/Buffon%27s_needle_problem">Buffon’s needle</a>, we get the <strong>approximation</strong>)</p>
+<p>Applying the method of <a href="https://en.wikipedia.org/wiki/Buffon%27s_needle_problem">Buffon’s needle</a>, we get the <strong>approximation</strong></p>
 <pre class="r"><code>set.seed(42)
 N = 100000
 x = runif(N)