diff --git a/embassy-stm32/src/rcc/mod.rs b/embassy-stm32/src/rcc/mod.rs
index 2ede725a..f15cee7f 100644
--- a/embassy-stm32/src/rcc/mod.rs
+++ b/embassy-stm32/src/rcc/mod.rs
@@ -8,7 +8,7 @@ cfg_if::cfg_if! {
     } else {
         #[derive(Default)]
         pub struct Config {}
-        pub unsafe fn init(_config: Config) -> SystemClock {
+        pub unsafe fn init(_config: Config) {
         }
     }
 }