diff --git a/components/bootloader_support/bootloader_flash/include/bootloader_flash_priv.h b/components/bootloader_support/bootloader_flash/include/bootloader_flash_priv.h
index 9045b0865544..dd1df35c7084 100644
--- a/components/bootloader_support/bootloader_flash/include/bootloader_flash_priv.h
+++ b/components/bootloader_support/bootloader_flash/include/bootloader_flash_priv.h
@@ -20,7 +20,7 @@ extern "C" {
 
 #define FLASH_SECTOR_SIZE 0x1000
 #define FLASH_BLOCK_SIZE 	0x10000
-#define MMAP_ALIGNED_MASK 	0x0000FFFF
+#define MMAP_ALIGNED_MASK 	(SPI_FLASH_MMU_PAGE_SIZE - 1)
 #define MMU_FLASH_MASK    (~(SPI_FLASH_MMU_PAGE_SIZE - 1))
 
 /**