diff --git a/DuetPkg/DxeIpl/DxeIpl.inf b/DuetPkg/DxeIpl/DxeIpl.inf
index d2d43e982e..68251a5f86 100644
--- a/DuetPkg/DxeIpl/DxeIpl.inf
+++ b/DuetPkg/DxeIpl/DxeIpl.inf
@@ -63,7 +63,9 @@
   Ia32/EnterDxeCore.asm
   Ia32/Paging.c
   Ia32/VirtualMemory.h
-
+  Ia32/CpuIoAccessGnu.c | GCC
+  Ia32/EnterDxeCoreGnu.c | GCC
+  
 #[BuildOptions.common]
   #MSFT:*_*_IA32_DLINK_FLAGS = /out:"$(BIN_DIR)\SecMain.exe" /base:0x10000000 /pdb:"$(BIN_DIR)\SecMain.pdb" /LIBPATH:"$(VCINSTALLDIR)\Lib" /LIBPATH:"$(VCINSTALLDIR)\PlatformSdk\Lib" /NOLOGO /SUBSYSTEM:CONSOLE /NODEFAULTLIB /IGNORE:4086 /MAP /OPT:REF /DEBUG /MACHINE:I386 /LTCG Kernel32.lib MSVCRTD.lib Gdi32.lib User32.lib Winmm.lib
   #MSFT:*_*_IA32_CC_FLAGS = /nologo /W4 /WX /Gy /c /D UNICODE /Od /FI$(DEST_DIR_DEBUG)/AutoGen.h /EHs-c- /GF /Gs8192 /Zi /Gm /D _CRT_SECURE_NO_WARNINGS /D _CRT_SECURE_NO_DEPRECATE