diff --git a/rp235x-hal/src/timer.rs b/rp235x-hal/src/timer.rs
index fb2ed80bb..0caf3ef1f 100644
--- a/rp235x-hal/src/timer.rs
+++ b/rp235x-hal/src/timer.rs
@@ -6,7 +6,7 @@
 //!
 //! Each of the 4 alarms can match on the lower 32 bits of Counter and trigger an interrupt.
 //!
-//! See [Section 12.8](https://datasheets.raspberrypi.org/.pdf) of the datasheet for more details.
+//! See [Section 12.8](https://rptl.io/rp2350-datasheet) of the datasheet for more details.
 
 use core::sync::atomic::{AtomicU8, Ordering};
 use fugit::{MicrosDurationU32, MicrosDurationU64, TimerInstantU64};