diff --git a/aoc2019/src/lib.rs b/aoc2019/src/lib.rs
index 5d003de..28326d5 100644
--- a/aoc2019/src/lib.rs
+++ b/aoc2019/src/lib.rs
@@ -1,9 +1,2 @@
 pub mod day01;
 pub mod day02;
-
-pub type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>;
-
-#[macro_export]
-macro_rules! err {
-    ($($string:expr),+) => (Box::<dyn std::error::Error>::from(format!($($string),+)))
-}