diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c
index 966a7cf92d..71e4ca5eec 100644
--- a/hw/pci-host/q35.c
+++ b/hw/pci-host/q35.c
@@ -622,7 +622,15 @@ static void mch_class_init(ObjectClass *klass, void *data)
     dc->desc = "Host bridge";
     dc->vmsd = &vmstate_mch;
     k->vendor_id = PCI_VENDOR_ID_INTEL;
-    k->device_id = PCI_DEVICE_ID_INTEL_Q35_MCH;
+    /*
+     * The 'q35' machine type implements an Intel Series 3 chipset,
+     * of which there are several variants. The key difference between
+     * the 82P35 MCH ('p35') and 82Q35 GMCH ('q35') variants is that
+     * the latter has an integrated graphics adapter. QEMU does not
+     * implement integrated graphics, so uses the PCI ID for the 82P35
+     * chipset.
+     */
+    k->device_id = PCI_DEVICE_ID_INTEL_P35_MCH;
     k->revision = MCH_HOST_BRIDGE_REVISION_DEFAULT;
     k->class_id = PCI_CLASS_BRIDGE_HOST;
     /*
diff --git a/include/hw/pci/pci_ids.h b/include/hw/pci/pci_ids.h
index 63acc722a9..eeb33018ad 100644
--- a/include/hw/pci/pci_ids.h
+++ b/include/hw/pci/pci_ids.h
@@ -255,7 +255,7 @@
 #define PCI_DEVICE_ID_INTEL_82801I_EHCI2 0x293c
 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed
 
-#define PCI_DEVICE_ID_INTEL_Q35_MCH      0x29c0
+#define PCI_DEVICE_ID_INTEL_P35_MCH      0x29c0
 
 #define PCI_VENDOR_ID_XEN                0x5853
 #define PCI_DEVICE_ID_XEN_PLATFORM       0x0001