diff --git a/MdePkg/Include/Uefi/UefiBaseType.h b/MdePkg/Include/Uefi/UefiBaseType.h
index 728a047260..d9556cd2ec 100644
--- a/MdePkg/Include/Uefi/UefiBaseType.h
+++ b/MdePkg/Include/Uefi/UefiBaseType.h
@@ -270,10 +270,9 @@ typedef union {
 
 #elif defined (MDE_CPU_ARM)
 
-#define EFI_IMAGE_MACHINE_TYPE_SUPPORTED(Machine) \
-  (((Machine) == EFI_IMAGE_MACHINE_ARMTHUMB_MIXED) || ((Machine) == EFI_IMAGE_MACHINE_EBC))
+#define EFI_IMAGE_MACHINE_TYPE_SUPPORTED(Machine) ((Machine) == EFI_IMAGE_MACHINE_ARMTHUMB_MIXED)
 
-#define EFI_IMAGE_MACHINE_CROSS_TYPE_SUPPORTED(Machine) ((Machine) == EFI_IMAGE_MACHINE_ARMTHUMB_MIXED) 
+#define EFI_IMAGE_MACHINE_CROSS_TYPE_SUPPORTED(Machine) (FALSE)
 
 #elif defined (MDE_CPU_AARCH64)