diff --git a/hw/isa/piix.c b/hw/isa/piix.c
index 270b8eb1f7..bd66fb7475 100644
--- a/hw/isa/piix.c
+++ b/hw/isa/piix.c
@@ -339,7 +339,7 @@ static void pci_piix3_realize(PCIDevice *dev, Error **errp)
     }
 
     memory_region_init_io(&d->rcr_mem, OBJECT(dev), &rcr_ops, d,
-                          "piix3-reset-control", 1);
+                          "piix-reset-control", 1);
     memory_region_add_subregion_overlap(pci_address_space_io(dev),
                                         PIIX_RCR_IOPORT, &d->rcr_mem, 1);
 
@@ -532,7 +532,7 @@ static void piix4_realize(PCIDevice *dev, Error **errp)
                              "intr", 1);
 
     memory_region_init_io(&s->rcr_mem, OBJECT(dev), &rcr_ops, s,
-                          "reset-control", 1);
+                          "piix-reset-control", 1);
     memory_region_add_subregion_overlap(pci_address_space_io(dev),
                                         PIIX_RCR_IOPORT, &s->rcr_mem, 1);