diff --git a/module2/exo3/exercice_fr.Rmd b/module2/exo3/exercice_fr.Rmd
index 4d393879b310c4540b3ffd1677c061721c377013..254a13f493305a1c4e15d5921dc14befa0d28256 100644
--- a/module2/exo3/exercice_fr.Rmd
+++ b/module2/exo3/exercice_fr.Rmd
@@ -42,6 +42,8 @@ ggplot()+
   geom_histogram(data= x.df, aes(data), binwidth = 1.5, fill = 'blue', color = 'black')
 
 
-hist(x.df$data, xlim = c(0, 25), col = 'blue')
+hist(x.df$data, xlim = c(0, 25), col = 'blue', main = '')
+box(col = 'black')
+grid(lwd=2, nx=5, ny=5)
 
 ```
\ No newline at end of file