diff --git a/block/src/fcntl.rs b/block/src/fcntl.rs
index 23c6f9f16..98084748c 100644
--- a/block/src/fcntl.rs
+++ b/block/src/fcntl.rs
@@ -147,7 +147,6 @@ impl LockGranularity {
 /// image. Without a byte-range lock, some NFS implementations may treat the
 /// entire file as exclusively locked and prevent such operations (e.g. NetApp).
 #[derive(Clone, Copy, Debug, Default, PartialEq, Eq, serde::Deserialize, serde::Serialize)]
-#[serde(rename_all = "kebab-case")]
 pub enum LockGranularityChoice {
     /// Byte-range lock covering [0, size).
     #[default]
diff --git a/vmm/src/api/openapi/cloud-hypervisor.yaml b/vmm/src/api/openapi/cloud-hypervisor.yaml
index cdba385c7..efdcf7a67 100644
--- a/vmm/src/api/openapi/cloud-hypervisor.yaml
+++ b/vmm/src/api/openapi/cloud-hypervisor.yaml
@@ -945,8 +945,8 @@ components:
 
     LockGranularity:
       type: string
-      enum: [byte-range, full]
-      default: byte-range
+      enum: [ByteRange, Full]
+      default: ByteRange
 
     DiskConfig:
       type: object