diff --git a/boot/bootutil/src/bootutil_misc.c b/boot/bootutil/src/bootutil_misc.c
index 6c05eff..a29a27d 100644
--- a/boot/bootutil/src/bootutil_misc.c
+++ b/boot/bootutil/src/bootutil_misc.c
@@ -148,10 +148,17 @@
 }
 
 uint32_t
+boot_status_sz(uint32_t min_write_sz)
+{
+    return /* state for all sectors */
+           BOOT_STATUS_MAX_ENTRIES * BOOT_STATUS_STATE_COUNT * min_write_sz;
+}
+
+uint32_t
 boot_trailer_sz(uint32_t min_write_sz)
 {
     return /* state for all sectors */
-           BOOT_STATUS_MAX_ENTRIES * BOOT_STATUS_STATE_COUNT * min_write_sz +
+           boot_status_sz(min_write_sz)           +
 #ifdef MCUBOOT_ENC_IMAGES
            /* encryption keys */
            BOOT_ENC_KEY_SIZE * 2                  +
diff --git a/boot/bootutil/src/bootutil_priv.h b/boot/bootutil/src/bootutil_priv.h
index bab5ec9..df49453 100644
--- a/boot/bootutil/src/bootutil_priv.h
+++ b/boot/bootutil/src/bootutil_priv.h
@@ -251,6 +251,7 @@
                         size_t slen, uint8_t key_id);
 
 int boot_magic_compatible_check(uint8_t tbl_val, uint8_t val);
+uint32_t boot_status_sz(uint32_t min_write_sz);
 uint32_t boot_trailer_sz(uint32_t min_write_sz);
 int boot_status_entries(int image_index, const struct flash_area *fap);
 uint32_t boot_status_off(const struct flash_area *fap);