diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index 7f72c122fc..d31e831c30 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -295,16 +295,6 @@
   ## Include/Guid/PlatDriOverrideHii.h
   gPlatformOverridesManagerGuid      = { 0x8614567d, 0x35be, 0x4415, { 0x8d, 0x88, 0xbd, 0x7d, 0xc, 0x9c, 0x70, 0xc0 }}
 
-  ## Include/Guid/Ip4Config2Hii.h
-  gIp4Config2NvDataGuid              = { 0x9b942747, 0x154e, 0x4d29, { 0xa4, 0x36, 0xbf, 0x71, 0x0, 0xc8, 0xb5, 0x3b }}
-
-  ## Include/Guid/VlanConfigHii.h
-  gVlanConfigFormSetGuid             = { 0xd79df6b0, 0xef44, 0x43bd, { 0x97, 0x97, 0x43, 0xe9, 0x3b, 0xcf, 0x5f, 0xa8 }}
-
-  ## Include/Guid/Ip4IScsiConfigHii.h
-  gIp4IScsiConfigGuid                = { 0x6456ed61, 0x3579, 0x41c9, { 0x8a, 0x26, 0x0a, 0x0b, 0xd6, 0x2b, 0x78, 0xfc }}
-  gIScsiCHAPAuthInfoGuid             = { 0x786ec0ac, 0x65ae, 0x4d1b, { 0xb1, 0x37, 0xd, 0x11, 0xa, 0x48, 0x37, 0x97 }}
-
   ## Include/Guid/ZeroGuid.h
   gZeroGuid                          = { 0x0, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}}