diff --git a/ch32v-insert-coin/src/main.rs b/ch32v-insert-coin/src/main.rs
index 159a55e..8b17c75 100644
--- a/ch32v-insert-coin/src/main.rs
+++ b/ch32v-insert-coin/src/main.rs
@@ -518,14 +518,13 @@ fn app_main(mut p: hal::Peripherals) -> ! {
                 app.shut_down();
 
                 loop {
-                    riscv::asm::delay(20_000);
-                    unsafe { system::enter_standby() };
                     unsafe {
                         #[allow(static_mut_refs)]
                         INPUT_FLAGS.sense_coin_flag.clear();
                         #[allow(static_mut_refs)]
                         INPUT_FLAGS.main_btn_flag.clear();
                     }
+                    unsafe { system::enter_standby() };
                     riscv::asm::wfi();
                     let mut config = hal::Config::default();
                     config.rcc = hal::rcc::Config::SYSCLK_FREQ_48MHZ_HSI;