diff --git a/drivers/virtio/virtio_pci_legacy.c b/drivers/virtio/virtio_pci_legacy.c
index 08764ee6f2929a1bbe486f64b6a80a56d6c85936..202e5ab1d31bea62541ce7e5707dad3b29a4d4db 100644
--- a/drivers/virtio/virtio_pci_legacy.c
+++ b/drivers/virtio/virtio_pci_legacy.c
@@ -277,7 +277,7 @@ static int virtio_pci_notify(struct udevice *udev, struct virtqueue *vq)
 
 static int virtio_pci_bind(struct udevice *udev)
 {
-	static int num_devs;
+	static unsigned int num_devs;
 	char name[20];
 
 	/* Create a unique device name for PCI type devices */