diff --git a/vmm/src/device_manager.rs b/vmm/src/device_manager.rs
index d8f1c84a1..105613018 100644
--- a/vmm/src/device_manager.rs
+++ b/vmm/src/device_manager.rs
@@ -474,7 +474,6 @@ impl DeviceManager {
         _exit_evt: &EventFd,
         reset_evt: &EventFd,
         vmm_path: PathBuf,
-        io_bus: &Arc<devices::Bus>,
     ) -> DeviceManagerResult<Arc<Mutex<Self>>> {
         let mut virtio_devices: Vec<(Arc<Mutex<dyn vm_virtio::VirtioDevice>>, bool)> = Vec::new();
         let migratable_devices: Vec<Arc<Mutex<dyn Migratable>>> = Vec::new();
@@ -486,7 +485,7 @@ impl DeviceManager {
 
         let address_manager = Arc::new(AddressManager {
             allocator,
-            io_bus: Arc::clone(io_bus),
+            io_bus: Arc::new(devices::Bus::new()),
             mmio_bus: Arc::new(devices::Bus::new()),
             vm_fd: vm_fd.clone(),
         });
diff --git a/vmm/src/vm.rs b/vmm/src/vm.rs
index e919f1d14..7d7daea59 100755
--- a/vmm/src/vm.rs
+++ b/vmm/src/vm.rs
@@ -222,8 +222,6 @@ pub struct Vm {
     state: RwLock<VmState>,
     cpu_manager: Arc<Mutex<cpu::CpuManager>>,
     memory_manager: Arc<Mutex<MemoryManager>>,
-    // Hold the strong reference onto the IO bus.
-    _io_bus: Arc<devices::Bus>,
 }
 
 impl Vm {
@@ -331,8 +329,6 @@ impl Vm {
             .ok_or(Error::CreateSystemAllocator)?,
         ));
 
-        let io_bus = Arc::new(devices::Bus::new());
-
         let memory_config = config.lock().unwrap().memory.clone();
 
         let memory_manager = MemoryManager::new(
@@ -355,7 +351,6 @@ impl Vm {
             &exit_evt,
             &reset_evt,
             vmm_path,
-            &io_bus,
         )
         .map_err(Error::DeviceManager)?;
 
@@ -384,7 +379,6 @@ impl Vm {
             state: RwLock::new(VmState::Created),
             cpu_manager,
             memory_manager,
-            _io_bus: io_bus,
         })
     }