diff --git a/embassy-stm32/src/fmt.rs b/embassy-stm32/src/fmt.rs
index 660407569..b6ae24ee8 100644
--- a/embassy-stm32/src/fmt.rs
+++ b/embassy-stm32/src/fmt.rs
@@ -10,12 +10,15 @@ compile_error!("You may not enable both `defmt` and `log` features.");
 macro_rules! rcc_assert {
     ($($x:tt)*) => {
         {
-            if cfg!(feature = "unchecked-overclocking") {
+            #[cfg(not(feature = "unchecked-overclocking"))]
+            {
                 #[cfg(not(feature = "defmt"))]
                 ::core::assert!($($x)*);
                 #[cfg(feature = "defmt")]
                 ::defmt::assert!($($x)*);
-            } else {
+            }
+            #[cfg(feature = "unchecked-overclocking")]
+            {
                 #[cfg(feature = "log")]
                 ::log::warn!("`rcc_assert!` skipped: `unchecked-overclocking` feature is enabled.");
                 #[cfg(feature = "defmt")]