diff --git a/virtio-devices/src/transport/pci_device.rs b/virtio-devices/src/transport/pci_device.rs
index 5afc81bf5..931d722d5 100644
--- a/virtio-devices/src/transport/pci_device.rs
+++ b/virtio-devices/src/transport/pci_device.rs
@@ -1070,7 +1070,7 @@ impl PciDevice for VirtioPciDevice {
             bars.push(bar);
         }
 
-        self.bar_regions = bars.clone();
+        self.bar_regions.clone_from(&bars);
 
         Ok(bars)
     }