diff --git a/hw/xfree86/os-support/bus/xf86Pci.h b/hw/xfree86/os-support/bus/xf86Pci.h
index 415f0710b..ce1336bf2 100644
--- a/hw/xfree86/os-support/bus/xf86Pci.h
+++ b/hw/xfree86/os-support/bus/xf86Pci.h
@@ -251,7 +251,6 @@ typedef enum {
 
 
 /* Public PCI access functions */
-extern _X_EXPORT ADDRESS pciBusAddrToHostAddr(PCITAG tag, PciAddrType type, ADDRESS addr);
 extern _X_EXPORT PCITAG pciTag(int busnum, int devnum, int funcnum);
 extern _X_EXPORT Bool xf86scanpci(void);