diff --git a/src/minivhd_io.c b/src/minivhd_io.c
index b128586..2967b93 100644
--- a/src/minivhd_io.c
+++ b/src/minivhd_io.c
@@ -1,5 +1,6 @@
 #include <stdlib.h>
 #include <string.h>
+#include "bswap.h"
 #include "minivhd_internal.h"
 #include "minivhd_util.h"
 
@@ -56,8 +57,9 @@ static void mvhd_write_sect_bitmap(MVHDMeta* vhdm, int blk) {
 
 static void mvhd_write_bat_entry(MVHDMeta* vhdm, int blk) {
     uint64_t table_offset = vhdm->sparse.bat_offset + (blk * sizeof vhdm->block[blk].offset);
+    uint32_t offset = cpu_to_be32(vhdm->block[blk].offset);
     fseeko64(vhdm->f, table_offset, SEEK_SET);
-    fwrite(&vhdm->block[blk].offset, sizeof vhdm->block[blk].offset, 1, vhdm->f);
+    fwrite(&offset, sizeof offset, 1, vhdm->f);
 }
 
 static void mvhd_create_block(MVHDMeta* vhdm, int blk) {
diff --git a/src/minivhd_manage.c b/src/minivhd_manage.c
index 3e0d9da..44ea9ec 100644
--- a/src/minivhd_manage.c
+++ b/src/minivhd_manage.c
@@ -73,6 +73,7 @@ static MVHDBlock* mvhd_read_bat(MVHDMeta *vhdm, MVHDError* err) {
     fseeko64(vhdm->f, vhdm->sparse.bat_offset, SEEK_SET);
     for (uint32_t i = 0; i < vhdm->sparse.max_bat_ent; i++) {
         fread(&vhdm->block[i].offset, sizeof vhdm->block[i].offset, 1, vhdm->f);
+        vhdm->block[i].offset = be32_to_cpu(vhdm->block[i].offset);
         vhdm->block[i].bitmap = NULL;
         vhdm->block[i].bitmap_cached = false;
     }