diff --git a/src/main.rs b/src/main.rs
index 0b8fd3f..d2b986c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -36,7 +36,7 @@ fn main() {
         let pattern = format_multiline("val 255 150 0");
         pattern.iter()
             .map(|x: &Vec<String>| parse_line((*x).clone()))
-            .for_each(|res| {
+            .for_each(|res: Result<Box<dyn Pattern>, ParseError>| {
                 if res.is_ok() {
                     res.unwrap().execute(&mut lights);
                 }
diff --git a/src/util/pattern.rs b/src/util/pattern.rs
index d9b3327..ce732f1 100644
--- a/src/util/pattern.rs
+++ b/src/util/pattern.rs
@@ -5,7 +5,7 @@ use std::{
 };
 use std::sync::RwLockWriteGuard;
 
-type ParseError = Box<dyn std::error::Error>;
+pub type ParseError = Box<dyn std::error::Error>;
 
 pub trait Pattern<'a> {
     fn execute(&self, values: &'a mut RwLockWriteGuard<'_, [RawColor; crate::LED_SIZE]>);