diff --git a/services/shellchat/src/cmds/sleep.rs b/services/shellchat/src/cmds/sleep.rs
index 2ea43c0d6..6861b62e4 100644
--- a/services/shellchat/src/cmds/sleep.rs
+++ b/services/shellchat/src/cmds/sleep.rs
@@ -87,11 +87,12 @@ impl<'a> ShellCmdApi<'a> for Sleep {
                             let llio = llio::Llio::new(&xns);
                             let susres = susres::Susres::new_without_hook(&xns).unwrap();
                             let ticktimer = ticktimer_server::Ticktimer::new().unwrap();
+                            let trng = trng::Trng::new(&xns).unwrap();
                             ticktimer.sleep_ms(1500).unwrap();
                             let mut iters = 0;
                             loop {
                                 log::info!("suspend/resume cycle: {}", iters);
-                                llio.set_wakeup_alarm(4).unwrap();
+                                llio.set_wakeup_alarm(5).unwrap();
                                 ticktimer.sleep_ms(1000).unwrap();
                                 match susres.initiate_suspend() {
                                     Err(xous::Error::Timeout) => {
@@ -102,7 +103,7 @@ impl<'a> ShellCmdApi<'a> for Sleep {
                                         log::error!("Unknown error on suspend: {:?}", e);
                                     }
                                 }
-                                ticktimer.sleep_ms(7000).unwrap();
+                                ticktimer.sleep_ms(3000 + (trng.get_u32().unwrap() % 7000) as usize).unwrap();
                                 iters += 1;
                             }
                         }