diff --git a/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterPei.c b/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterPei.c
index 361a4f6508..bf6e1336ee 100644
--- a/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterPei.c
+++ b/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterPei.c
@@ -426,6 +426,7 @@ HashLibBaseCryptoRouterPeiConstructor (
     //
     ZeroMem (&HashInterfaceHob->HashInterface, sizeof (HashInterfaceHob->HashInterface));
     HashInterfaceHob->HashInterfaceCount = 0;
+    HashInterfaceHob->SupportedHashMask = 0;
   }
 
   //