INF MdeModulePkg/Universal/MemoryTest/NullMemoryTestDxe/NullMemoryTestDxe.inf\r
\r
INF OvmfPkg/SioBusDxe/SioBusDxe.inf\r
-!ifndef $(SOURCE_DEBUG_ENABLE)\r
+!if $(SOURCE_DEBUG_ENABLE) == FALSE\r
INF MdeModulePkg/Bus/Pci/PciSioSerialDxe/PciSioSerialDxe.inf\r
!endif\r
INF MdeModulePkg/Bus/Isa/Ps2KeyboardDxe/Ps2KeyboardDxe.inf\r