diff --git a/embassy-stm32/src/usart/mod.rs b/embassy-stm32/src/usart/mod.rs
index 2c011719..2fa758ec 100644
--- a/embassy-stm32/src/usart/mod.rs
+++ b/embassy-stm32/src/usart/mod.rs
@@ -1,7 +1,7 @@
 #![macro_use]
 
-//#[cfg_attr(usart_v1, path = "v1.rs")]
-//#[cfg_attr(usart_v2, path = "v2.rs")]
+#[cfg_attr(usart_v1, path = "v1.rs")]
+#[cfg_attr(usart_v2, path = "v2.rs")]
 #[cfg_attr(usart_v3, path = "v3.rs")]
 mod _version;
 use crate::peripherals;