diff --git a/hw/pci/pcie_aer.c b/hw/pci/pcie_aer.c
index 9a19be44ae..909e027d99 100644
--- a/hw/pci/pcie_aer.c
+++ b/hw/pci/pcie_aer.c
@@ -112,6 +112,10 @@ int pcie_aer_init(PCIDevice *dev, uint8_t cap_ver, uint16_t offset,
 
     pci_set_long(dev->w1cmask + offset + PCI_ERR_UNCOR_STATUS,
                  PCI_ERR_UNC_SUPPORTED);
+    pci_set_long(dev->config + offset + PCI_ERR_UNCOR_MASK,
+                 PCI_ERR_UNC_MASK_DEFAULT);
+    pci_set_long(dev->wmask + offset + PCI_ERR_UNCOR_MASK,
+                 PCI_ERR_UNC_SUPPORTED);
 
     pci_set_long(dev->config + offset + PCI_ERR_UNCOR_SEVER,
                  PCI_ERR_UNC_SEVERITY_DEFAULT);
diff --git a/include/hw/pci/pcie_regs.h b/include/hw/pci/pcie_regs.h
index 1fe0bdd25b..4972106c42 100644
--- a/include/hw/pci/pcie_regs.h
+++ b/include/hw/pci/pcie_regs.h
@@ -141,6 +141,9 @@ typedef enum PCIExpLinkWidth {
                                          PCI_ERR_UNC_ATOP_EBLOCKED |    \
                                          PCI_ERR_UNC_TLP_PRF_BLOCKED)
 
+#define PCI_ERR_UNC_MASK_DEFAULT        (PCI_ERR_UNC_INTN | \
+                                         PCI_ERR_UNC_TLP_PRF_BLOCKED)
+
 #define PCI_ERR_UNC_SEVERITY_DEFAULT    (PCI_ERR_UNC_DLP |              \
                                          PCI_ERR_UNC_SDN |              \
                                          PCI_ERR_UNC_FCP |              \