diff --git a/hypervisor/dm/vpci/vmcs9900.c b/hypervisor/dm/vpci/vmcs9900.c
index c159b76cb..345229e3b 100644
--- a/hypervisor/dm/vpci/vmcs9900.c
+++ b/hypervisor/dm/vpci/vmcs9900.c
@@ -134,14 +134,14 @@ static void init_vmcs9900(struct pci_vdev *vdev)
 	mmio_vbar->size = 0x1000U;
 	mmio_vbar->base_gpa = pci_cfg->vbar_base[MCS9900_MMIO_BAR];
 	mmio_vbar->mask = (uint32_t) (~(mmio_vbar->size - 1UL));
-	mmio_vbar->fixed = (uint32_t) (mmio_vbar->base_gpa & PCI_BASE_ADDRESS_MEM_MASK);
+	mmio_vbar->fixed = 0U;
 
 	/* initialize vuart-pci msix bar */
 	msix_vbar->type = PCIBAR_MEM32;
 	msix_vbar->size = 0x1000U;
 	msix_vbar->base_gpa = pci_cfg->vbar_base[MCS9900_MSIX_BAR];
 	msix_vbar->mask = (uint32_t) (~(msix_vbar->size - 1UL));
-	msix_vbar->fixed = (uint32_t) (msix_vbar->base_gpa & PCI_BASE_ADDRESS_MEM_MASK);
+	msix_vbar->fixed = 0U;
 
 	vdev->nr_bars = 2;