diff --git a/embassy-stm32/src/lib.rs b/embassy-stm32/src/lib.rs
index de697eac..6bdd0c26 100644
--- a/embassy-stm32/src/lib.rs
+++ b/embassy-stm32/src/lib.rs
@@ -12,7 +12,7 @@ pub mod fmt;
 use embassy::interrupt::{Interrupt, InterruptExt};
 //pub(crate) use stm32_metapac as pac;
 
-pub mod pac {
+pub(crate) mod pac {
     pub use stm32_metapac::*;
 
     #[cfg(any(feature = "_syscfg_f4"))]