diff --git a/exercises/options/options3.cairo b/exercises/options/options3.cairo
index d50bda2c1..e03ba5bf4 100644
--- a/exercises/options/options3.cairo
+++ b/exercises/options/options3.cairo
@@ -49,11 +49,12 @@ fn display_grades(student: @Student, index: usize) {
#[test]
#[available_gas(20000000)]
fn test_all_defined() {
- let mut courses = ArrayTrait::