diff --git a/hw/audio/pl041.c b/hw/audio/pl041.c
index 5dd18c7..7d331b9 100644
--- a/hw/audio/pl041.c
+++ b/hw/audio/pl041.c
@@ -543,7 +543,7 @@
     }
 
     /* Connect the device to the sysbus */
-    memory_region_init_io(&s->iomem, NULL, &pl041_ops, s, "pl041", 0x1000);
+    memory_region_init_io(&s->iomem, OBJECT(s), &pl041_ops, s, "pl041", 0x1000);
     sysbus_init_mmio(dev, &s->iomem);
     sysbus_init_irq(dev, &s->irq);