diff --git a/companion/src/firmwares/opentx/opentxinterface.cpp b/companion/src/firmwares/opentx/opentxinterface.cpp
index 79c31daf9..4a268a35a 100644
--- a/companion/src/firmwares/opentx/opentxinterface.cpp
+++ b/companion/src/firmwares/opentx/opentxinterface.cpp
@@ -1270,6 +1270,7 @@ void registerOpenTxFirmwares()
   firmware->addOption("noheli", Firmware::tr("Disable HELI menu and cyclic mix support"));
   firmware->addOption("nogvars", Firmware::tr("Disable Global variables"));
   firmware->addOption("lua", Firmware::tr("Enable Lua custom scripts screen"));
+  firmware->addOption("flexr9m", Firmware::tr("Enable non certified R9M firmwares"));
   addOpenTxFontOptions(firmware);
   registerOpenTxFirmware(firmware);