diff --git a/InOsEmuPkg/Unix/UnixX64.dsc b/InOsEmuPkg/Unix/UnixX64.dsc
index 995e0e53f0..4012acfdeb 100644
--- a/InOsEmuPkg/Unix/UnixX64.dsc
+++ b/InOsEmuPkg/Unix/UnixX64.dsc
@@ -274,12 +274,14 @@
 #
 ###################################################################################################
 
+!ifndef $(SKIP_MAIN_BUILD)
 [Components.X64]
   MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf {
     <LibraryClasses>
       # turn off CR3 write so that DXE IPL will not crash emulator
       BaseLib|UnixPkg/Library/UnixBaseLib/UnixBaseLib.inf
   }
+!endif
 
 [Components.IA32]
   MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf 
diff --git a/InOsEmuPkg/Unix/build.sh b/InOsEmuPkg/Unix/build.sh
index 4e2add8b35..24440de48e 100755
--- a/InOsEmuPkg/Unix/build.sh
+++ b/InOsEmuPkg/Unix/build.sh
@@ -121,7 +121,7 @@ done
 #
 echo $PATH
 echo `which build`
-build -p $WORKSPACE/InOsEmuPkg/Unix/UnixX64.dsc      -a IA32 -t $TARGET_TOOLS -D SEC_ONLY -D BUILD_32 -n 3 $1 $2 $3 $4 $5 $6 $7 $8  modules
+build -p $WORKSPACE/InOsEmuPkg/Unix/UnixX64.dsc      -a IA32 -t $TARGET_TOOLS -D SEC_ONLY -D BUILD_32 -D SKIP_MAIN_BUILD -n 3 $1 $2 $3 $4 $5 $6 $7 $8  modules
 build -p $WORKSPACE/InOsEmuPkg/Unix/UnixX64.dsc      -a IA32 -t  $UNIXPKG_TOOLS -D BUILD_32 $NETWORK_SUPPORT $BUILD_NEW_SHELL $BUILD_FAT -n 3 $1 $2 $3 $4 $5 $6 $7 $8
 cp $WORKSPACE/Build/EmuUnixIa32/DEBUG_"$TARGET_TOOLS"/IA32/SecMain $WORKSPACE/Build/EmuUnixIa32/DEBUG_"$UNIXPKG_TOOLS"/IA32
 exit $?