diff --git a/MdePkg/Include/Uefi/UefiSpec.h b/MdePkg/Include/Uefi/UefiSpec.h
index 8c5b22e2ac..159d3b9e71 100644
--- a/MdePkg/Include/Uefi/UefiSpec.h
+++ b/MdePkg/Include/Uefi/UefiSpec.h
@@ -2029,10 +2029,7 @@ typedef struct {
 #define DEVICE_PATH_MESSAGING_VT_100_PLUS EFI_VT_100_PLUS_GUID
 #define DEVICE_PATH_MESSAGING_VT_UTF8     EFI_VT_UTF8_GUID
 
-#if (EFI_SPECIFICATION_VERSION >= 0x00020000)
-
 #define DEVICE_PATH_MESSAGING_UART_FLOW_CONTROL   EFI_UART_DEVICE_PATH_GUID
-#define DEVICE_PATH_MESSAGING_SAS                 EFI_SAS_DEVICE_PATH_GUID
 
 typedef struct {
   EFI_DEVICE_PATH_PROTOCOL        Header;
@@ -2040,6 +2037,10 @@ typedef struct {
   UINT32                          FlowControlMap;
 } UART_FLOW_CONTROL_DEVICE_PATH;
 
+#if (EFI_SPECIFICATION_VERSION >= 0x00020000)
+
+#define DEVICE_PATH_MESSAGING_SAS                 EFI_SAS_DEVICE_PATH_GUID
+
 typedef struct {
   EFI_DEVICE_PATH_PROTOCOL        Header;
   EFI_GUID                        Guid;