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-rw-r--r--exercises/18_iterators/iterators4.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/exercises/18_iterators/iterators4.rs b/exercises/18_iterators/iterators4.rs
index 08ba365..8381dbb 100644
--- a/exercises/18_iterators/iterators4.rs
+++ b/exercises/18_iterators/iterators4.rs
@@ -1,4 +1,4 @@
-fn factorial(num: u8) -> u64 {
+fn factorial(num: u64) -> u64 {
// TODO: Complete this function to return the factorial of `num`.
// Do not use:
// - early returns (using the `return` keyword explicitly)