diff --git a/OvmfPkg/Fdt/FdtPciHostBridgeLib/FdtPciHostBridgeLib.inf b/OvmfPkg/Fdt/FdtPciHostBridgeLib/FdtPciHostBridgeLib.inf
index f015480685..e610e3d03f 100644
--- a/OvmfPkg/Fdt/FdtPciHostBridgeLib/FdtPciHostBridgeLib.inf
+++ b/OvmfPkg/Fdt/FdtPciHostBridgeLib/FdtPciHostBridgeLib.inf
@@ -20,7 +20,7 @@
 # The following information is for reference only and not required by the build
 # tools.
 #
-#  VALID_ARCHITECTURES           = AARCH64 ARM
+#  VALID_ARCHITECTURES           = AARCH64 ARM RISCV64
 #
 
 [Sources]