diff --git a/framework/jinux-frame/src/arch/x86/timer/pit.rs b/framework/jinux-frame/src/arch/x86/timer/pit.rs
index bd0d57bd2..69fce02ff 100644
--- a/framework/jinux-frame/src/arch/x86/timer/pit.rs
+++ b/framework/jinux-frame/src/arch/x86/timer/pit.rs
@@ -8,7 +8,7 @@ const TIMER_RATE: u32 = 1193182;
 
 static TIMER_PERIOD: IoPort<u8, WriteOnlyAccess> = unsafe { IoPort::new(0x40) };
 static TIMER_MOD: IoPort<u8, WriteOnlyAccess> = unsafe { IoPort::new(0x43) };
-static TIMER_SQUARE_WAVE: u8 = 0x36;
+static TIMER_SQUARE_WAVE: u8 = 0x34;
 
 pub(crate) fn init() {
     // Initialize timer.