diff --git a/BaseTools/Source/C/Makefiles/header.makefile b/BaseTools/Source/C/Makefiles/header.makefile
index 6895f98..7939db0 100644
--- a/BaseTools/Source/C/Makefiles/header.makefile
+++ b/BaseTools/Source/C/Makefiles/header.makefile
@@ -39,6 +39,10 @@ ifeq ($(ARCH), ARM)
 ARCH_INCLUDE = -I $(MAKEROOT)/Include/Arm/
 endif
 
+ifeq ($(ARCH), AARCH64)
+ARCH_INCLUDE = -I $(MAKEROOT)/Include/AArch64/
+endif
+
 INCLUDE = $(TOOL_INCLUDE) -I $(MAKEROOT) -I $(MAKEROOT)/Include/Common -I $(MAKEROOT)/Include/ -I $(MAKEROOT)/Include/IndustryStandard -I $(MAKEROOT)/Common/ -I .. -I . $(ARCH_INCLUDE) 
 CPPFLAGS = $(INCLUDE)
 CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -fno-merge-constants -nostdlib -Wall -Werror -c -g