diff --git a/CryptoPkg/Library/IntrinsicLib/IntrinsicLib.inf b/CryptoPkg/Library/IntrinsicLib/IntrinsicLib.inf
index 2ec987b260..4d2440466d 100644
--- a/CryptoPkg/Library/IntrinsicLib/IntrinsicLib.inf
+++ b/CryptoPkg/Library/IntrinsicLib/IntrinsicLib.inf
@@ -46,6 +46,8 @@
 
 [Sources.X64]
   CopyMem.c
+[Sources.RISCV64]
+  CopyMem.c
 
 [Packages]
   MdePkg/MdePkg.dec