diff --git a/subjects/elementary.en.md b/subjects/elementary.en.md
index 758208a6e..83edc0df7 100644
--- a/subjects/elementary.en.md
+++ b/subjects/elementary.en.md
@@ -7,6 +7,7 @@ Create 3 functions:
 - `divide` that do an integer division without using `/`
 - `modulo` that act like the `%` operator without using it
 
+> functions should have (a, b) as arguments
 
 ### Code provided
 ```js