diff --git a/embassy-stm32/src/timer/simple_pwm.rs b/embassy-stm32/src/timer/simple_pwm.rs
index e3c790213..0fc2a1bf0 100644
--- a/embassy-stm32/src/timer/simple_pwm.rs
+++ b/embassy-stm32/src/timer/simple_pwm.rs
@@ -423,6 +423,7 @@ macro_rules! impl_waveform_chx {
                             )
                             .await
                         }
+                        #[cfg(not(stm32l0))]
                         TimerBits::Bits32 => {
                             // the data must be aligned to quad words
                             assert!(duty.len() % 4 == 0);