diff --git a/tests/pwm/Cargo.toml b/tests/pwm/Cargo.toml
index e8acf7a7..6b80f4b8 100644
--- a/tests/pwm/Cargo.toml
+++ b/tests/pwm/Cargo.toml
@@ -14,6 +14,3 @@ panic = "abort"
 riot-wrappers = { version = "*", features = [ "set_panic_handler" ] }
 riot-sys = "*"
 embedded-hal = { version = "0.2.4", features = ["unproven"] }
-
-[patch.crates-io]
-riot-sys = { git = "https://github.com/RIOT-OS/rust-riot-sys" }
diff --git a/tests/pwm/src/lib.rs b/tests/pwm/src/lib.rs
index bc7d4d26..c8177f3f 100644
--- a/tests/pwm/src/lib.rs
+++ b/tests/pwm/src/lib.rs
@@ -1,13 +1,13 @@
 #![no_std]
 
 use embedded_hal::Pwm;
-use riot_wrappers::pwm::{HertzU32, PWMChannel, PWMDevice, PWMMode};
+use riot_wrappers::pwm::{HertzU32, PWMDevice, PWMMode};
 use riot_wrappers::riot_main;
 
 riot_main!(main);
 
 fn main() {
-    let mut pwm = PWMDevice::<0>::new(0, PWMMode::Left, HertzU32::Hz(10), 10).unwrap();
+    let mut pwm = PWMDevice::<0>::new(0, PWMMode::Left, HertzU32::Hz(10), 100).unwrap();
     let channel_0 = pwm.get_channel(0).unwrap();
-    pwm.set_duty(channel_0, 32768); // 50% duty_cycle
+    pwm.set_duty(channel_0, 50); // 50% duty_cycle
 }