diff --git a/MdePkg/Library/PeiPiLib/PeiPiLib.inf b/MdePkg/Library/PeiPiLib/PeiPiLib.inf
index d265f79d45..29aba607c4 100644
--- a/MdePkg/Library/PeiPiLib/PeiPiLib.inf
+++ b/MdePkg/Library/PeiPiLib/PeiPiLib.inf
@@ -42,6 +42,7 @@
   DebugLib
 
 [Guids]
+  gEfiFirmwareFileSystem2Guid
 
 [Ppis]
   gEfiPeiFirmwareVolumeInfoPpiGuid