diff --git a/lib/stm32/common/flash_common_f24.c b/lib/stm32/common/flash_common_f24.c
index d6ae0d02..366c9e74 100644
--- a/lib/stm32/common/flash_common_f24.c
+++ b/lib/stm32/common/flash_common_f24.c
@@ -26,11 +26,6 @@
 
 #include <libopencm3/stm32/flash.h>
 
-void flash_wait_for_last_operation(void)
-{
-	while ((FLASH_SR & FLASH_SR_BSY) == FLASH_SR_BSY);
-}
-
 /*---------------------------------------------------------------------------*/
 /** @brief Set the Program Parallelism Size
 
diff --git a/lib/stm32/f2/flash.c b/lib/stm32/f2/flash.c
index 7f8255df..be458637 100644
--- a/lib/stm32/f2/flash.c
+++ b/lib/stm32/f2/flash.c
@@ -49,5 +49,10 @@
 
 #include <libopencm3/stm32/flash.h>
 
+void flash_wait_for_last_operation(void)
+{
+	while ((FLASH_SR & FLASH_SR_BSY) == FLASH_SR_BSY);
+}
+
 /**@}*/
 
diff --git a/lib/stm32/f4/flash.c b/lib/stm32/f4/flash.c
index 5353605a..020861d7 100644
--- a/lib/stm32/f4/flash.c
+++ b/lib/stm32/f4/flash.c
@@ -49,5 +49,10 @@
 
 #include <libopencm3/stm32/flash.h>
 
+void flash_wait_for_last_operation(void)
+{
+	while ((FLASH_SR & FLASH_SR_BSY) == FLASH_SR_BSY);
+}
+
 /**@}*/