diff --git a/cli/src/config.rs b/cli/src/config.rs
index 87dff40e9879af35994154ab32e70765d8ff463c..50dde974bdf34245924ebcc9fa0dacda47c75e08 100644
--- a/cli/src/config.rs
+++ b/cli/src/config.rs
@@ -490,6 +490,7 @@ pub fn config_vm_info(vm_cfg: VmConfigEntry, vm_id: u64, fd: i32) -> Result<(),
             irq_list_addr: dtb_device.irq_list.as_ptr() as *const u64 as u64,
             irq_list_length: dtb_device.irq_list.len() as u64,
             addr_region_ipa: dtb_device.addr_region_ipa,
+            addr_region_length: dtb_device.addr_region_length,
         };
         ioctl_send_config(fd, fd_event, &dtb_cfg_arg as *const _ as *const c_void)
             .map_err(|_| String::from("failed to send vm_dtb_device_config_arg"))?;
diff --git a/cli/src/config_arg.rs b/cli/src/config_arg.rs
index 89b9feacc0001065dcfe79e2e2a647b90dc44304..97856eccd461aa736acf7f0483339eda5823af25 100644
--- a/cli/src/config_arg.rs
+++ b/cli/src/config_arg.rs
@@ -88,6 +88,7 @@ pub struct VmAddDtbDeviceConfigArg {
     pub irq_list_addr: u64,
     pub irq_list_length: u64,
     pub addr_region_ipa: u64,
+    pub addr_region_length: u64,
 }
 
 #[repr(C)]