Use better naming for flags
diff --git a/boot/bootutil/src/bootutil_priv.h b/boot/bootutil/src/bootutil_priv.h
index 59f655d..85fa178 100644
--- a/boot/bootutil/src/bootutil_priv.h
+++ b/boot/bootutil/src/bootutil_priv.h
@@ -90,8 +90,8 @@
 #define BOOT_FLAG_IMAGE_OK         0
 #define BOOT_FLAG_COPY_DONE        1
 
-#define BOOT_IMAGE_OK              0x01
-#define BOOT_IMAGE_UNSET           0xff
+#define BOOT_FLAG_SET              0x01
+#define BOOT_FLAG_UNSET            0xff
 
 extern const uint32_t BOOT_MAGIC_SZ;