diff --git a/MdeModulePkg/MdeModulePkg.dsc b/MdeModulePkg/MdeModulePkg.dsc
index 6e756782ed..0073dce81e 100644
--- a/MdeModulePkg/MdeModulePkg.dsc
+++ b/MdeModulePkg/MdeModulePkg.dsc
@@ -29,6 +29,7 @@
   CacheMaintenanceLib|MdePkg/Library/BaseCacheMaintenanceLib/BaseCacheMaintenanceLib.inf
   DebugLib|MdePkg/Library/BaseDebugLibNull/BaseDebugLibNull.inf
   BaseLib|MdePkg/Library/BaseLib/BaseLib.inf
+  SynchronizationLib|MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf
   CpuLib|MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
   BaseMemoryLib|MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf
   PciCf8Lib|MdePkg/Library/BasePciCf8Lib/BasePciCf8Lib.inf
diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h
index 5682aa9c34..c8f1d83e70 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h
@@ -32,6 +32,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Library/UefiBootServicesTableLib.h>
 #include <Library/UefiLib.h>
 #include <Library/BaseLib.h>
+#include <Library/SynchronizationLib.h>
 #include <Library/MemoryAllocationLib.h>
 #include <Guid/VariableInfo.h>
 #include <Guid/GlobalVariable.h>
diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
index 8e76f13409..58fbb177ff 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
@@ -42,6 +42,7 @@
 [LibraryClasses]
   MemoryAllocationLib
   BaseLib
+  SynchronizationLib
   UefiLib
   UefiBootServicesTableLib
   FvbServiceLib