diff --git a/ch32v-insert-coin/src/app.rs b/ch32v-insert-coin/src/app.rs
index 775a908..14138f8 100644
--- a/ch32v-insert-coin/src/app.rs
+++ b/ch32v-insert-coin/src/app.rs
@@ -555,7 +555,7 @@ impl App {
         self.interfaces
             .pwm_core
             .write_amplitude(self.services.led1.channel, 0);
-        crate::riscv::asm::delay(20_000_000);
+        crate::riscv::asm::delay(10_000_000);
 
         self.interfaces.pwm_core.pwm.borrow().shutdown();
         self.interfaces.adc_core.shutdown();