diff --git a/hw/pci/shpc.c b/hw/pci/shpc.c
index 9a39060933..27c496e8c3 100644
--- a/hw/pci/shpc.c
+++ b/hw/pci/shpc.c
@@ -663,6 +663,7 @@ void shpc_cleanup(PCIDevice *d, MemoryRegion *bar)
     SHPCDevice *shpc = d->shpc;
     d->cap_present &= ~QEMU_PCI_CAP_SHPC;
     memory_region_del_subregion(bar, &shpc->mmio);
+    object_unparent(OBJECT(&shpc->mmio));
     /* TODO: cleanup config space changes? */
     g_free(shpc->config);
     g_free(shpc->cmask);