diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8361e90..943d956 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -54,6 +54,10 @@
 
 option (BMCWEB_INSECURE_DISABLE_XSS_PREVENTION "Disable XSS preventions" OFF)
 
+option (BMCWEB_INSECURE_ENABLE_REDFISH_FW_TFTP_UPDATE "Enable TFTP based
+       firmware update transactions through Redfish
+       UpdateService.SimpleUpdate." OFF)
+
 project (bmc-webserver CXX)
 
 include (CTest)
@@ -272,6 +276,7 @@
     $<$<BOOL:${BMCWEB_ENABLE_REDFISH_CPU_LOG}>: -DBMCWEB_ENABLE_REDFISH_CPU_LOG>
     $<$<BOOL:${BMCWEB_ENABLE_REDFISH_BMC_JOURNAL}>: -DBMCWEB_ENABLE_REDFISH_BMC_JOURNAL>
     $<$<BOOL:${BMCWEB_ENABLE_REDFISH_DBUS_LOG_ENTRIES}>: -DBMCWEB_ENABLE_REDFISH_DBUS_LOG_ENTRIES>
+    $<$<BOOL:${BMCWEB_INSECURE_ENABLE_REDFISH_FW_TFTP_UPDATE}>: -DBMCWEB_INSECURE_ENABLE_REDFISH_FW_TFTP_UPDATE>
 
 )