diff --git a/MdeModulePkg/Universal/Network/Tcp4Dxe/Socket.h b/MdeModulePkg/Universal/Network/Tcp4Dxe/Socket.h
index e0f9540930..8d917b13ea 100644
--- a/MdeModulePkg/Universal/Network/Tcp4Dxe/Socket.h
+++ b/MdeModulePkg/Universal/Network/Tcp4Dxe/Socket.h
@@ -114,7 +114,7 @@ typedef enum {
 
 #define SOCK_IS_NO_MORE_DATA(Sock)    (0 != ((Sock)->Flag & SO_NO_MORE_DATA))
 
-#define SOCK_SIGNATURE                EFI_SIGNATURE_32 ('S', 'O', 'C', 'K')
+#define SOCK_SIGNATURE                SIGNATURE_32 ('S', 'O', 'C', 'K')
 
 #define SOCK_FROM_THIS(a)             CR ((a), SOCKET, NetProtocol, SOCK_SIGNATURE)
 
diff --git a/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Driver.h b/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Driver.h
index ba8c8c23f1..4aee9592a3 100644
--- a/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Driver.h
+++ b/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Driver.h
@@ -17,7 +17,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Protocol/ServiceBinding.h>
 #include <Library/IpIoLib.h>
 
-#define TCP4_DRIVER_SIGNATURE   EFI_SIGNATURE_32 ('T', 'C', 'P', '4')
+#define TCP4_DRIVER_SIGNATURE   SIGNATURE_32 ('T', 'C', 'P', '4')
 
 #define TCP4_PORT_KNOWN         1024
 #define TCP4_PORT_USER_RESERVED 65535