diff --git a/EdkCompatibilityPkg/EdkCompatibilityPkg.dsc b/EdkCompatibilityPkg/EdkCompatibilityPkg.dsc
index c6b6889873..d43b78adc4 100644
--- a/EdkCompatibilityPkg/EdkCompatibilityPkg.dsc
+++ b/EdkCompatibilityPkg/EdkCompatibilityPkg.dsc
@@ -43,6 +43,7 @@ define GCC_MACRO                 = -DEFI_SPECIFICATION_VERSION=0x00020000 -DPI_S
 
 [LibraryClasses.common]
   BaseLib|MdePkg/Library/BaseLib/BaseLib.inf
+  SynchronizationLib|MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf
   UefiBootServicesTableLib|MdePkg/Library/UefiBootServicesTableLib/UefiBootServicesTableLib.inf
   HiiLib|MdeModulePkg/Library/UefiHiiLib/UefiHiiLib.inf
   ExtendedHiiLib|MdeModulePkg/Library/ExtendedHiiLib/ExtendedHiiLib.inf