diff --git a/src/util/virhostdev.c b/src/util/virhostdev.c
index 86ca8e0473fa52370bc943fc7d58cf3228354478..c424a970f7ab3f2d1bff4ce7e4734fdb850cca4b 100644
--- a/src/util/virhostdev.c
+++ b/src/util/virhostdev.c
@@ -1624,7 +1624,7 @@ virHostdevReAttachUSBDevices(virHostdevManagerPtr mgr,
 
         if (!(usb = virUSBDeviceNew(usbsrc->bus, usbsrc->device, NULL))) {
             VIR_WARN("Unable to reattach USB device %03d.%03d on domain %s",
-                     usbsrc->bus, usbsrc->device, dom_name);
+                     usbsrc->bus, usbsrc->device, NULLSTR(dom_name));
             continue;
         }
 
diff --git a/src/util/virhostdev.h b/src/util/virhostdev.h
index 4ce5c4de547ab944a620d73a865f256879d8e36d..76039bb60024ab7c63bd96bcf1a1371ce02a29b6 100644
--- a/src/util/virhostdev.h
+++ b/src/util/virhostdev.h
@@ -110,7 +110,7 @@ virHostdevReAttachUSBDevices(virHostdevManagerPtr hostdev_mgr,
                               const char *dom_name,
                               virDomainHostdevDefPtr *hostdevs,
                               int nhostdevs)
-    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
+    ATTRIBUTE_NONNULL(1);
 void
 virHostdevReAttachSCSIDevices(virHostdevManagerPtr hostdev_mgr,
                               const char *drv_name,