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-rw-r--r--src/lib/formats/fs_fat.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/lib/formats/fs_fat.cpp b/src/lib/formats/fs_fat.cpp
index 140036ae1c1..885a5ea3087 100644
--- a/src/lib/formats/fs_fat.cpp
+++ b/src/lib/formats/fs_fat.cpp
@@ -564,6 +564,8 @@ impl::impl(fsblk_t &blockdev, fsblk_t::block_t &&boot_sector_block, std::vector<
, m_last_cluster_indicator(((u64)1 << bits_per_fat_entry) - 1)
, m_last_valid_cluster(m_last_cluster_indicator - 0x10)
{
+ if (m_bytes_per_sector == 0)
+ m_bytes_per_sector = 512;
}