diff --git a/loader/src/lib.rs b/loader/src/lib.rs
index 1ff422382..15a41f17d 100644
--- a/loader/src/lib.rs
+++ b/loader/src/lib.rs
@@ -54,4 +54,4 @@ pub const GUARD_MEMORY_BYTES: usize = 8 * crate::PAGE_SIZE; // 1 extra page for
 pub const SWAPPER_PID: u8 = 2;
 
 #[cfg(feature = "bao1x")]
-pub const SYSTEM_CLOCK_FREQUENCY: u32 = 800_000_000;
+pub const SYSTEM_CLOCK_FREQUENCY: u32 = bao1x_hal::board::DEFAULT_FCLK_FREQUENCY / 2;
diff --git a/loader/src/platform/bao1x/bao1x.rs b/loader/src/platform/bao1x/bao1x.rs
index 3db9516ad..a93ee4063 100644
--- a/loader/src/platform/bao1x/bao1x.rs
+++ b/loader/src/platform/bao1x/bao1x.rs
@@ -36,7 +36,8 @@ pub fn delay(quantum: usize) {
     use utralib::{CSR, utra};
     // abuse the d11ctime timer to create some time-out like thing
     let mut d11c = CSR::new(utra::d11ctime::HW_D11CTIME_BASE as *mut u32);
-    d11c.wfo(utra::d11ctime::CONTROL_COUNT, 333_333); // 1.0ms per interval
+    // 1.0ms per interval
+    d11c.wfo(utra::d11ctime::CONTROL_COUNT, crate::SYSTEM_CLOCK_FREQUENCY / 1000);
     let mut polarity = d11c.rf(utra::d11ctime::HEARTBEAT_BEAT);
     for _ in 0..quantum {
         while polarity == d11c.rf(utra::d11ctime::HEARTBEAT_BEAT) {}