diff --git a/subjects/doop.fr.md b/subjects/doop.fr.md
index e78c06f8..d7dc77c6 100644
--- a/subjects/doop.fr.md
+++ b/subjects/doop.fr.md
@@ -32,7 +32,9 @@ student@ubuntu:~/piscine-go/test$ ./doop 1 p 1 | cat -e
 student@ubuntu:~/piscine-go/test$ ./doop 1 / 0 | cat -e
 No division by 0$
 student@ubuntu:~/piscine-go/test$ ./doop 1 % 0 | cat -e
-No modulo by 0$
+No Modulo by 0$
 student@ubuntu:~/piscine-go/test$ ./doop 1 "*" 1
 1
+student@ubuntu:~/piscine-go/test$ ./doop 1 "*" -1
+-1
 ```