diff --git a/microbit/src/04-meet-your-hardware/terminology.md b/microbit/src/04-meet-your-hardware/terminology.md
index a18e38bfd..ac0377f5f 100644
--- a/microbit/src/04-meet-your-hardware/terminology.md
+++ b/microbit/src/04-meet-your-hardware/terminology.md
@@ -37,7 +37,7 @@ does actually have a [BSP] so we are going to use that on top of our
 HAL as well.
 
 [nrF52]: https://crates.io/crates/nrf52833-pac
-[nrF51]: https://crates.io/crates/nrf51
+[nrF51]: https://crates.io/crates/nrf51-pac
 [nrF52-hal]: https://crates.io/crates/nrf52833-hal
 [nrF51-hal]: https://crates.io/crates/nrf51-hal
 [BSP]: https://crates.io/crates/microbit