diff --git a/subjects/doop.en.md b/subjects/doop.en.md
index ec41c1a2e..853ae8601 100644
--- a/subjects/doop.en.md
+++ b/subjects/doop.en.md
@@ -37,7 +37,7 @@ student@ubuntu:~/piscine-go/test$ ./doop 1 % 0 | cat -e
 No Modulo by 0$
 student@ubuntu:~/piscine-go/test$ ./doop 9223372036854775807 + 1
 0
-student@ubuntu:~/piscine-go/test$ ./doop -9223372036854775809 "*" 3
+student@ubuntu:~/piscine-go/test$ ./doop -9223372036854775809 - 3
 0
 student@ubuntu:~/piscine-go/test$ ./doop 9223372036854775807 "*" 3
 0