diff --git a/hardware_chromeos.cc b/hardware_chromeos.cc
index d9c13a3..3099151 100644
--- a/hardware_chromeos.cc
+++ b/hardware_chromeos.cc
@@ -186,6 +186,10 @@
   return VbGetSystemPropertyInt("tpm_kernver");
 }
 
+int HardwareChromeOS::GetMinFirmwareKeyVersion() const {
+  return VbGetSystemPropertyInt("tpm_fwver");
+}
+
 bool HardwareChromeOS::SetMaxKernelKeyRollforward(int max_kernel_rollforward) {
   return VbSetSystemPropertyInt("max_kernel_rollforward",
                                 max_kernel_rollforward) == 0;