diff --git a/arch/arm/src/stm32h7/stm32_flash.c b/arch/arm/src/stm32h7/stm32_flash.c
index cc86534d7f4..5c275c8eb61 100644
--- a/arch/arm/src/stm32h7/stm32_flash.c
+++ b/arch/arm/src/stm32h7/stm32_flash.c
@@ -522,8 +522,7 @@ ssize_t up_progmem_eraseblock(size_t block)
 
   stm32h7_flash_modifyreg32(priv, STM32_FLASH_CR1_OFFSET, 0, FLASH_CR_SER);
   stm32h7_flash_modifyreg32(priv, STM32_FLASH_CR1_OFFSET, FLASH_CR_SNB_MASK,
-                            FLASH_CR_SNB((block +
-                                          CONFIG_STM32H7_PROGMEM_STARTBLOCK)));
+                            FLASH_CR_SNB(block));
 
   stm32h7_flash_modifyreg32(priv, STM32_FLASH_CR1_OFFSET, 0, FLASH_CR_START);