diff --git a/embassy-stm32/src/flash/f3.rs b/embassy-stm32/src/flash/f3.rs
index 1cb08ee1..dea4c3e8 100644
--- a/embassy-stm32/src/flash/f3.rs
+++ b/embassy-stm32/src/flash/f3.rs
@@ -99,3 +99,12 @@ 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/f4.rs b/embassy-stm32/src/flash/f4.rs
index b8327ce4..614cd8d3 100644
--- a/embassy-stm32/src/flash/f4.rs
+++ b/embassy-stm32/src/flash/f4.rs
@@ -174,3 +174,12 @@ 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/f7.rs b/embassy-stm32/src/flash/f7.rs
index 6d47b78a..3e87705e 100644
--- a/embassy-stm32/src/flash/f7.rs
+++ b/embassy-stm32/src/flash/f7.rs
@@ -133,3 +133,12 @@ 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/h7.rs b/embassy-stm32/src/flash/h7.rs
index 3178b3be..49ba8ef3 100644
--- a/embassy-stm32/src/flash/h7.rs
+++ b/embassy-stm32/src/flash/h7.rs
@@ -199,3 +199,6 @@ 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 5048a331..e6c1826a 100644
--- a/embassy-stm32/src/flash/l.rs
+++ b/embassy-stm32/src/flash/l.rs
@@ -185,3 +185,12 @@ 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 5d5115c9..b491f7dc 100644
--- a/embassy-stm32/src/flash/mod.rs
+++ b/embassy-stm32/src/flash/mod.rs
@@ -181,9 +181,5 @@ cfg_if::cfg_if! {
 
 // 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);
-    });
+    family::init();
 }