diff --git a/CryptoPkg/Library/BaseCryptLib/SmmCryptLib.inf b/CryptoPkg/Library/BaseCryptLib/SmmCryptLib.inf
index 55df99f843..ab19930871 100644
--- a/CryptoPkg/Library/BaseCryptLib/SmmCryptLib.inf
+++ b/CryptoPkg/Library/BaseCryptLib/SmmCryptLib.inf
@@ -75,6 +75,12 @@
 [Sources.X64]
   Rand/CryptRandTsc.c
 
+[Sources.ARM]
+  Rand/CryptRand.c
+
+[Sources.AARCH64]
+  Rand/CryptRand.c
+
 [Packages]
   MdePkg/MdePkg.dec
   CryptoPkg/CryptoPkg.dec