diff --git a/src/hypervisor/virhostdev.c b/src/hypervisor/virhostdev.c
index 120187b07a..aa3fc8738f 100644
--- a/src/hypervisor/virhostdev.c
+++ b/src/hypervisor/virhostdev.c
@@ -1980,11 +1980,11 @@ virHostdevReAttachMediatedDevices(virHostdevManagerPtr mgr,
         virDomainHostdevSubsysMediatedDevPtr mdevsrc;
         virDomainHostdevDefPtr hostdev = hostdevs[i];
 
-        mdevsrc = &hostdev->source.subsys.u.mdev;
-
         if (!virHostdevIsMdevDevice(hostdev))
             continue;
 
+        mdevsrc = &hostdev->source.subsys.u.mdev;
+
         if (!(mdev = virMediatedDeviceNew(mdevsrc->uuidstr,
                                           mdevsrc->model)))
             continue;