diff --git a/xencall/src/domctl.rs b/xencall/src/domctl.rs
index 314c3f2..abf1d92 100644
--- a/xencall/src/domctl.rs
+++ b/xencall/src/domctl.rs
@@ -35,7 +35,7 @@ impl DomainControl<'_> {
             domid,
             value: DomCtlValue {
                 get_domain_info: GetDomainInfo {
-                    domid,
+                    domid: 0,
                     pad1: 0,
                     flags: 0,
                     total_pages: 0,
diff --git a/xencall/src/sys.rs b/xencall/src/sys.rs
index 3875ff5..2ff38ad 100644
--- a/xencall/src/sys.rs
+++ b/xencall/src/sys.rs
@@ -269,7 +269,7 @@ impl Default for CreateDomain {
 #[repr(C)]
 #[derive(Copy, Clone, Debug)]
 pub struct GetDomainInfo {
-    pub domid: u32,
+    pub domid: u16,
     pub pad1: u16,
     pub flags: u32,
     pub total_pages: u64,