diff --git a/boot/mynewt/mcuboot_config/include/mcuboot_config/mcuboot_config.h b/boot/mynewt/mcuboot_config/include/mcuboot_config/mcuboot_config.h
index 7bf42ca57..2daa5eee5 100644
--- a/boot/mynewt/mcuboot_config/include/mcuboot_config/mcuboot_config.h
+++ b/boot/mynewt/mcuboot_config/include/mcuboot_config/mcuboot_config.h
@@ -124,6 +124,10 @@
 
 #define MCUBOOT_MAX_IMG_SECTORS       MYNEWT_VAL(BOOTUTIL_MAX_IMG_SECTORS)
 
+#if MYNEWT_VAL(MCU_FLASH_MIN_WRITE_SIZE) > 8
+#define MCUBOOT_BOOT_MAX_ALIGN  MYNEWT_VAL(MCU_FLASH_MIN_WRITE_SIZE)
+#endif
+
 #if MYNEWT_VAL(BOOTUTIL_FEED_WATCHDOG) && MYNEWT_VAL(WATCHDOG_INTERVAL)
 #include <hal/hal_watchdog.h>
 #define MCUBOOT_WATCHDOG_FEED()    \