diff --git a/boot/zephyr/hal_flash.c b/boot/zephyr/hal_flash.c
index a3700bc..986ae77 100644
--- a/boot/zephyr/hal_flash.c
+++ b/boot/zephyr/hal_flash.c
@@ -20,15 +20,9 @@
 #include <zephyr.h>
 #include <misc/printk.h>
 
-#include "hal/hal_flash.h"
+#include MCUBOOT_TARGET_CONFIG
 
-#if defined(CONFIG_BOARD_FRDM_K64F)
-#define FLASH_ALIGN 8
-#elif defined(CONFIG_BOARD_96B_CARBON)
-#define FLASH_ALIGN 1
-#else
-#error "Board is currently not supported by bootloader"
-#endif
+#include "hal/hal_flash.h"
 
 /* All of the currently supported devices allow single byte writes. */
 uint8_t hal_flash_align(uint8_t flash_id)