diff --git a/block/src/fixed_vhd_sync.rs b/block/src/fixed_vhd_sync.rs
index 056c79818..c66a945cb 100644
--- a/block/src/fixed_vhd_sync.rs
+++ b/block/src/fixed_vhd_sync.rs
@@ -78,6 +78,8 @@ impl disk_file::DiskFd for FixedVhdDiskSync {
 
 impl disk_file::Geometry for FixedVhdDiskSync {}
 
+impl disk_file::SparseCapable for FixedVhdDiskSync {}
+
 pub struct FixedVhdSync {
     raw_file_sync: RawFileSync,
     size: u64,