diff --git a/src/2019/day16/rust/src/lib.rs b/src/2019/day16/rust/src/lib.rs
index 1403aea4a..c3934c20a 100644
--- a/src/2019/day16/rust/src/lib.rs
+++ b/src/2019/day16/rust/src/lib.rs
@@ -40,6 +40,7 @@ fn ftt(inp: &mut Vec<isize>, offset: usize) -> String {
 impl aoclib::Solvable<&str, String> for PartOne {
 	fn solve(input: &str) -> aoclib::Solution<String> {
 		let mut a = input
+			.to_string()
 			.repeat(1)
 			.chars()
 			.map(|c| c.to_string().parse::<isize>().unwrap())