diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index ae8381ee93ad81c922a62094a3b9d80b25336486..0bc2259e618d1704f82464e116f8f7b1b851e0d1 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -1999,6 +1999,8 @@ int qemuDomainDetachPciDiskDevice(struct qemud_driver *driver,
 
     virDomainDiskRemove(vm->def, i);
 
+    dev->data.disk->backingChain = detach->backingChain;
+    detach->backingChain = NULL;
     virDomainDiskDefFree(detach);
 
     if (virSecurityManagerRestoreImageLabel(driver->securityManager,