diff --git a/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesRuntimeDxe.inf b/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesRuntimeDxe.inf
index ac903b50de..5f0264bc95 100644
--- a/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesRuntimeDxe.inf
+++ b/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FvbServicesRuntimeDxe.inf
@@ -30,7 +30,7 @@
 # The following information is for reference only and not required by the build
 # tools.
 #
-#  VALID_ARCHITECTURES           = IA32
+#  VALID_ARCHITECTURES           = IA32 X64
 #
 
 [Sources]