diff --git a/EdkCompatibilityPkg/EdkCompatibilityPkg.dsc b/EdkCompatibilityPkg/EdkCompatibilityPkg.dsc
index a70d56b8d1..f068419820 100644
--- a/EdkCompatibilityPkg/EdkCompatibilityPkg.dsc
+++ b/EdkCompatibilityPkg/EdkCompatibilityPkg.dsc
@@ -55,7 +55,6 @@ define GCC_MACRO                 = -DEFI_SPECIFICATION_VERSION=0x00020000 -DPI_S
   DevicePathLib|MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.inf
   TimerLib|MdePkg/Library/BaseTimerLibNullTemplate/BaseTimerLibNullTemplate.inf
   IoLib|MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
-  PalLib|MdePkg/Library/BasePalLibNull/BasePalLibNull.inf
   UefiLib|MdePkg/Library/UefiLib/UefiLib.inf
   UefiRuntimeLib|MdePkg/Library/UefiRuntimeLib/UefiRuntimeLib.inf
   PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
@@ -70,7 +69,6 @@ define GCC_MACRO                 = -DEFI_SPECIFICATION_VERSION=0x00020000 -DPI_S
   CpuLib|MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
 
 [LibraryClasses.common.PEIM]
-  HobLib|MdePkg/Library/PeiHobLib/PeiHobLib.inf
   MemoryAllocationLib|MdePkg/Library/PeiMemoryAllocationLib/PeiMemoryAllocationLib.inf
 
 [LibraryClasses.common.DXE_DRIVER,LibraryClasses.common.DXE_RUNTIME_DRIVER]