diff --git a/embassy-stm32/src/flash/h7.rs b/embassy-stm32/src/flash/h7.rs
index 49ba8ef3..3178b3be 100644
--- a/embassy-stm32/src/flash/h7.rs
+++ b/embassy-stm32/src/flash/h7.rs
@@ -199,6 +199,3 @@ pub(crate) unsafe fn blocking_wait_ready(bank: pac::flash::Bank) -> Result<(), E
         }
     }
 }
-
-// safety: must be called only once at startup
-pub(crate) unsafe fn init() {}
diff --git a/embassy-stm32/src/flash/l.rs b/embassy-stm32/src/flash/l.rs
index e6c1826a..5048a331 100644
--- a/embassy-stm32/src/flash/l.rs
+++ b/embassy-stm32/src/flash/l.rs
@@ -185,12 +185,3 @@ pub(crate) unsafe fn blocking_wait_ready() -> Result<(), Error> {
         }
     }
 }
-
-// safety: must be called only once at startup
-pub(crate) unsafe fn init() {
-    crate::pac::FLASH.acr().modify(|w| {
-        w.set_dcen(true);
-        w.set_icen(true);
-        w.set_prften(true);
-    });
-}
diff --git a/embassy-stm32/src/flash/mod.rs b/embassy-stm32/src/flash/mod.rs
index b491f7dc..3bba828d 100644
--- a/embassy-stm32/src/flash/mod.rs
+++ b/embassy-stm32/src/flash/mod.rs
@@ -181,5 +181,6 @@ cfg_if::cfg_if! {
 
 // safety: must be called only once at startup
 pub(crate) unsafe fn init() {
+    #[cfg(any(flash_f3, flash_f4, flash_f7))]
     family::init();
 }