diff --git a/src/sleep.rs b/src/sleep.rs
index f5af47d..3226802 100644
--- a/src/sleep.rs
+++ b/src/sleep.rs
@@ -24,7 +24,7 @@ use std::{
 };
 
 extern crate sysexits;
-use sysexits::{EX_OK, EX_USAGE};
+use sysexits::EX_USAGE;
 
 fn usage(s: &str) -> ExitCode {
 	eprintln!("Usage: {} [seconds]", s);
@@ -37,7 +37,7 @@ fn main() -> ExitCode {
 	if argv.len() == 2 {
 		if let Ok(s) = argv[1].parse::<u64>() {
 			sleep(Duration::from_secs(s));
-			ExitCode::from(EX_OK as u8)
+			ExitCode::SUCCESS
 		} else {
 			usage(&argv[0])
 		}