diff --git a/repos/os/src/server/vmm/virtio_console.h b/repos/os/src/server/vmm/virtio_console.h
index c5f014fbf7..419f5f0063 100644
--- a/repos/os/src/server/vmm/virtio_console.h
+++ b/repos/os/src/server/vmm/virtio_console.h
@@ -62,7 +62,7 @@ class Vmm::Virtio_console : public Virtio_device
 				_assert_irq();
 		}
 
-		Register _device_specific_features() { return 0; }
+		Register _device_specific_features() override { return 0; }
 
 	public: