diff --git a/src/main.rs b/src/main.rs
index f1692d7..d34c800 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -5,7 +5,7 @@ use std::sync::{Arc, RwLock};
 use std::thread;
 use rs_ws281x::{RawColor, Controller, ControllerBuilder, ChannelBuilder, StripType};
 
-pub const LED_SIZE: i32 = 450;
+pub const LED_SIZE: usize = 450;
 pub const BRIGHTNESS: u8 = 255;
 
 fn main() {
@@ -13,7 +13,7 @@ fn main() {
     let lock = Arc::new(RwLock::new([p; LED_SIZE]));
     let lock_c = Arc::clone(&lock);
 
-    let controller = ControllerBuilder::new()
+    let controller: Controller = ControllerBuilder::new()
     .channel(ChannelBuilder::new()
         .pin(18)
         .count(LED_SIZE)
@@ -24,7 +24,7 @@ fn main() {
     .build();
     thread::spawn(move || loop {
         let lights = lock_c.read().unwrap();
-        run_lights(&controller, &lights);
+        run_lights(&lights);
     });
     let mut x: u8 = 0;
     loop {