diff --git a/Kconfig.zephyr b/Kconfig.zephyr
index 891f684eed59..f75447590091 100644
--- a/Kconfig.zephyr
+++ b/Kconfig.zephyr
@@ -111,7 +111,7 @@ config FLASH_LOAD_OFFSET
 	  If unsure, leave at the default value 0.
 
 config FLASH_LOAD_SIZE
-	int "Kernel load size"
+	hex "Kernel load size"
 	default $(dt_chosen_reg_size,$(DT_CHOSEN_Z_CODE_PARTITION)) if USE_CODE_PARTITION
 	default 0
 	depends on HAS_FLASH_LOAD_OFFSET