diff --git a/OvmfPkg/Library/CcExitLib/X64/TdVmcallCpuid.nasm b/OvmfPkg/Library/CcExitLib/X64/TdVmcallCpuid.nasm
index fa86440904..c9c007352e 100644
--- a/OvmfPkg/Library/CcExitLib/X64/TdVmcallCpuid.nasm
+++ b/OvmfPkg/Library/CcExitLib/X64/TdVmcallCpuid.nasm
@@ -9,7 +9,7 @@
 DEFAULT REL
 SECTION .text
 
-%define TDVMCALL_EXPOSE_REGS_MASK       0xffec
+%define TDVMCALL_EXPOSE_REGS_MASK       0xffcc
 %define TDVMCALL                        0x0
 %define EXIT_REASON_CPUID               0xa