diff --git a/user/src/bin/sleep.rs b/user/src/bin/sleep.rs
index 439e8a65..d05d6248 100644
--- a/user/src/bin/sleep.rs
+++ b/user/src/bin/sleep.rs
@@ -7,7 +7,7 @@ extern crate user_lib;
 use user_lib::{sleep, exit, get_time, fork, waitpid};
 
 fn sleepy() {
-    let time: usize = 100;
+    let time: usize = 1000;
     for i in 0..5 {
         sleep(time);
         println!("sleep {} x {} msecs.", i + 1, time);