Index: /trunk/src/VBox/Devices/Bus/DevPCI.cpp
===================================================================
--- /trunk/src/VBox/Devices/Bus/DevPCI.cpp	(revision 32905)
+++ /trunk/src/VBox/Devices/Bus/DevPCI.cpp	(revision 32906)
@@ -2041,4 +2041,5 @@
     PciBusReg.u32Version              = PDM_PCIBUSREG_VERSION;
     PciBusReg.pfnRegisterR3           = pciRegister;
+    PciBusReg.pfnRegisterMsiR3        = NULL;
     PciBusReg.pfnIORegionRegisterR3   = pciIORegionRegister;
     PciBusReg.pfnSetConfigCallbacksR3 = pciSetConfigCallbacks;