diff --git a/MdePkg/Library/BasePciLibPciExpress/BasePciLibPciExpress.inf b/MdePkg/Library/BasePciLibPciExpress/BasePciLibPciExpress.inf
index 9df8117952..6ccd54ff9d 100644
--- a/MdePkg/Library/BasePciLibPciExpress/BasePciLibPciExpress.inf
+++ b/MdePkg/Library/BasePciLibPciExpress/BasePciLibPciExpress.inf
@@ -27,7 +27,7 @@
 
 
 #
-#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC
+#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC ARM AARCH64
 #
 
 [Sources]