diff --git a/src/riot-rs/Cargo.toml b/src/riot-rs/Cargo.toml
index f2c0bce7f..976309521 100644
--- a/src/riot-rs/Cargo.toml
+++ b/src/riot-rs/Cargo.toml
@@ -44,7 +44,7 @@ threading = [
 ## Enables support for timeouts in the internal executor---required to use
 ## `embassy_time::Timer`.
 time = ["riot-rs-embassy/time"]
-## Enables seeding the random number generator from hardware
+## Enables seeding the random number generator from hardware.
 hwrng = ["riot-rs-embassy/hwrng"]
 
 #! ## Wired communication