diff --git a/cpu/stm32_common/periph/flashpage.c b/cpu/stm32_common/periph/flashpage.c
index e4454b1818..3c0c28d645 100644
--- a/cpu/stm32_common/periph/flashpage.c
+++ b/cpu/stm32_common/periph/flashpage.c
@@ -77,7 +77,7 @@ static void _erase_page(void *page_addr)
     stmclk_enable_hsi();
 #endif
 
-   /* unlock the flash module */
+    /* unlock the flash module */
     _unlock_flash();
 
     /* make sure no flash operation is ongoing */
@@ -140,10 +140,10 @@ void flashpage_write_raw(void *target_addr, const void *data, size_t len)
     stmclk_enable_hsi();
 #endif
 
-    DEBUG("[flashpage_raw] unlocking the flash module\n");
+    /* unlock the flash module */
     _unlock_flash();
 
-    DEBUG("[flashpage] write: now writing the data\n");
+    DEBUG("[flashpage_raw] write: now writing the data\n");
 #if !(defined(CPU_FAM_STM32L0) || defined(CPU_FAM_STM32L1))
     /* set PG bit and program page to flash */
     CNTRL_REG |= FLASH_CR_PG;
@@ -156,9 +156,9 @@ void flashpage_write_raw(void *target_addr, const void *data, size_t len)
 
     /* clear program bit again */
     CNTRL_REG &= ~(FLASH_CR_PG);
-    DEBUG("[flashpage] write: done writing data\n");
+    DEBUG("[flashpage_raw] write: done writing data\n");
 
-    DEBUG("flashpage_raw] now locking the flash module again\n");
+    /* lock the flash module again */
     _lock();
 
 #if !(defined(CPU_FAM_STM32L0) || defined(CPU_FAM_STM32L1))