diff --git a/ioport.c b/ioport.c
index dce94a3..783a3ae 100644
--- a/ioport.c
+++ b/ioport.c
@@ -154,7 +154,7 @@
 
     for (i = 0; i < piolist->nr; ++i) {
         mrpio = container_of(piolist->regions[i], MemoryRegionPortioList, mr);
-        memory_region_destroy(&mrpio->mr);
+        object_unparent(OBJECT(&mrpio->mr));
         g_free(mrpio);
     }
     g_free(piolist->regions);