diff --git a/block/src/fixed_vhd_sync.rs b/block/src/fixed_vhd_sync.rs
index 778ab1653..056c79818 100644
--- a/block/src/fixed_vhd_sync.rs
+++ b/block/src/fixed_vhd_sync.rs
@@ -76,6 +76,8 @@ impl disk_file::DiskFd for FixedVhdDiskSync {
     }
 }
 
+impl disk_file::Geometry for FixedVhdDiskSync {}
+
 pub struct FixedVhdSync {
     raw_file_sync: RawFileSync,
     size: u64,