diff --git a/MdePkg/Library/BaseTimerLibLocalApic/BaseTimerLibLocalApic.msa b/MdePkg/Library/BaseTimerLibLocalApic/BaseTimerLibLocalApic.msa
index c1c6479cdc..81d4a10c57 100644
--- a/MdePkg/Library/BaseTimerLibLocalApic/BaseTimerLibLocalApic.msa
+++ b/MdePkg/Library/BaseTimerLibLocalApic/BaseTimerLibLocalApic.msa
@@ -25,7 +25,7 @@
     <OutputFileBasename>BaseTimerLibLocalApic</OutputFileBasename>
   </ModuleDefinitions>
   <LibraryClassDefinitions>
-    <LibraryClass Usage="ALWAYS_PRODUCED" SupModuleList="BASE DXE_CORE DXE_DRIVER PEIM PEI_CORE SEC UEFI_APPLICATION UEFI_DRIVER">
+    <LibraryClass Usage="ALWAYS_PRODUCED" SupModuleList="BASE DXE_CORE DXE_DRIVER PEIM PEI_CORE SEC UEFI_APPLICATION UEFI_DRIVER DXE_RUNTIME_DRIVER">
       <Keyword>TimerLib</Keyword>
     </LibraryClass>
     <LibraryClass Usage="ALWAYS_CONSUMED">