diff --git a/MdeModulePkg/MdeModulePkg.dsc b/MdeModulePkg/MdeModulePkg.dsc
index 0e8bf1c16e..7075ef5add 100644
--- a/MdeModulePkg/MdeModulePkg.dsc
+++ b/MdeModulePkg/MdeModulePkg.dsc
@@ -74,7 +74,7 @@
   SerialPortLib|MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNull.inf
   CapsuleLib|MdeModulePkg/Library/DxeCapsuleLibNull/DxeCapsuleLibNull.inf
   PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
-  #PalLib|MdePkg/Library/BasePalLibNull/BasePalLibNull.inf
+  PalLib|MdePkg/Library/BasePalLibNull/BasePalLibNull.inf
   #
   # Misc
   #