diff --git a/cpu/stm32/periph/flashpage.c b/cpu/stm32/periph/flashpage.c
index 4a559167a0..50cd060783 100644
--- a/cpu/stm32/periph/flashpage.c
+++ b/cpu/stm32/periph/flashpage.c
@@ -329,7 +329,7 @@ size_t flashpage_size(unsigned page)
     }
 }
 
-unsigned flashpage_page(void *addr)
+unsigned flashpage_page(const void *addr)
 {
     /* Calculates the flashpage number based on the address for the
      * non-homogeneous flashpage stm32 series.
diff --git a/drivers/include/periph/flashpage.h b/drivers/include/periph/flashpage.h
index 60e190ebf1..c7cc85bca3 100644
--- a/drivers/include/periph/flashpage.h
+++ b/drivers/include/periph/flashpage.h
@@ -190,7 +190,7 @@ static inline void *flashpage_addr(unsigned page)
  *
  * @return              page containing the given address
  */
-static inline unsigned flashpage_page(void *addr)
+static inline unsigned flashpage_page(const void *addr)
 {
     return (((intptr_t)addr - CPU_FLASH_BASE) / FLASHPAGE_SIZE);
 }
@@ -200,7 +200,7 @@ static inline unsigned flashpage_page(void *addr)
 /* Bare prototypes for the above functions. See above for the documentation */
 size_t flashpage_size(unsigned page);
 void *flashpage_addr(unsigned page);
-unsigned flashpage_page(void *addr);
+unsigned flashpage_page(const void *addr);
 
 #endif
 
@@ -319,7 +319,7 @@ static inline void *flashpage_rwwee_addr(unsigned page)
  *
  * @return              RWWEE page containing the given address
  */
-static inline int flashpage_rwwee_page(void *addr)
+static inline int flashpage_rwwee_page(const void *addr)
 {
     return (int)(((int)addr - CPU_FLASH_RWWEE_BASE) / FLASHPAGE_SIZE);
 }
diff --git a/drivers/periph_common/flashpage.c b/drivers/periph_common/flashpage.c
index f9457c213f..05252e1f6e 100644
--- a/drivers/periph_common/flashpage.c
+++ b/drivers/periph_common/flashpage.c
@@ -118,7 +118,7 @@ void *flashpage_addr(unsigned page)
 #endif /* PERIPH_FLASHPAGE_NEEDS_FLASHPAGE_ADDR */
 
 #ifdef PERIPH_FLASHPAGE_NEEDS_FLASHPAGE_PAGE
-unsigned flashpage_page(void *addr)
+unsigned flashpage_page(const void *addr)
 {
     unsigned page = 0;