diff --git a/embassy-stm32/src/usart/mod.rs b/embassy-stm32/src/usart/mod.rs
index 4488bd77..565416c7 100644
--- a/embassy-stm32/src/usart/mod.rs
+++ b/embassy-stm32/src/usart/mod.rs
@@ -922,8 +922,8 @@ fn configure(r: Regs, config: &Config, pclk_freq: Hertz, kind: Kind, enable_rx:
             w.set_over8(vals::Over8(over8 as _));
         });
 
+        #[cfg(not(usart_v1))]
         r.cr3().modify(|w| {
-            #[cfg(not(usart_v1))]
             w.set_onebit(config.assume_noise_free);
         });
     }