diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index dfbc89eb98..0471d72212 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -1001,7 +1001,7 @@
   gEfiFtp4ProtocolGuid                 = { 0xeb338826, 0x681b, 0x4295, {0xb3, 0x56, 0x2b, 0x36, 0x4c, 0x75, 0x7b, 0x9 }}
 
   ## Include/Protocol/IpSecConfig.h
-  gEfiIpSecConfigProtocolGuid          = { 0xce5e5929, 0xc7a3, 0x4602, 0xad, {0x9e, 0xc9, 0xda, 0xf9, 0x4e, 0xbf, 0xcf }}
+  gEfiIpSecConfigProtocolGuid          = { 0xce5e5929, 0xc7a3, 0x4602, {0xad, 0x9e, 0xc9, 0xda, 0xf9, 0x4e, 0xbf, 0xcf }}
 
   ## Include/Protocol/DriverHealth.h
   gEfiDriverHealthProtocolGuid         = { 0x2a534210, 0x9280, 0x41d8, {0xae, 0x79, 0xca, 0xda, 0x1, 0xa2, 0xb1, 0x27 }}