diff --git a/tools/pciaccess.cpp b/tools/pciaccess.cpp
index 8aced6f..0d2ae0b 100644
--- a/tools/pciaccess.cpp
+++ b/tools/pciaccess.cpp
@@ -45,6 +45,20 @@
     return ::pci_device_probe(dev);
 }
 
+int PciAccessImpl::pci_device_cfg_read_u8(struct pci_device* dev,
+                                          std::uint8_t* data,
+                                          pciaddr_t offset) const
+{
+    return ::pci_device_cfg_read_u8(dev, data, offset);
+}
+
+int PciAccessImpl::pci_device_cfg_write_u8(struct pci_device* dev,
+                                           std::uint8_t data,
+                                           pciaddr_t offset) const
+{
+    return ::pci_device_cfg_write_u8(dev, data, offset);
+}
+
 int PciAccessImpl::pci_device_map_range(struct pci_device* dev, pciaddr_t base,
                                         pciaddr_t size, unsigned map_flags,
                                         void** addr) const