1 files changed, 3 insertions, 3 deletions
diff --git a/MdePkg/Include/Uefi/UefiSpec.h b/MdePkg/Include/Uefi/UefiSpec.h
index 12611c7c1c..e51c964a1e 100644
--- a/MdePkg/Include/Uefi/UefiSpec.h
+++ b/MdePkg/Include/Uefi/UefiSpec.h
@@ -1705,14 +1705,14 @@ EFI_STATUS
 //
 // EFI Runtime Services Table
 //
-#define EFI_SYSTEM_TABLE_SIGNATURE      EFI_SIGNATURE_64 ('I','B','I',' ','S','Y','S','T')
+#define EFI_SYSTEM_TABLE_SIGNATURE      SIGNATURE_64 ('I','B','I',' ','S','Y','S','T')
 #define EFI_SYSTEM_TABLE_REVISION       ((2 << 16) | (10))
 #define EFI_2_10_SYSTEM_TABLE_REVISION  ((2 << 16) | (10))
 #define EFI_2_00_SYSTEM_TABLE_REVISION  ((2 << 16) | (00))
 #define EFI_1_10_SYSTEM_TABLE_REVISION  ((1 << 16) | (10))
 #define EFI_1_02_SYSTEM_TABLE_REVISION  ((1 << 16) | (02))
 
-#define EFI_RUNTIME_SERVICES_SIGNATURE  EFI_SIGNATURE_64 ('R','U','N','T','S','E','R','V')
+#define EFI_RUNTIME_SERVICES_SIGNATURE  SIGNATURE_64 ('R','U','N','T','S','E','R','V')
 #define EFI_RUNTIME_SERVICES_REVISION   EFI_2_10_SYSTEM_TABLE_REVISION
 
 ///
@@ -1764,7 +1764,7 @@ typedef struct {
 } EFI_RUNTIME_SERVICES;
 
 
-#define EFI_BOOT_SERVICES_SIGNATURE   EFI_SIGNATURE_64 ('B','O','O','T','S','E','R','V')
+#define EFI_BOOT_SERVICES_SIGNATURE   SIGNATURE_64 ('B','O','O','T','S','E','R','V')
 #define EFI_BOOT_SERVICES_REVISION    EFI_2_10_SYSTEM_TABLE_REVISION
 
 ///