diff --git a/libraries/AP_Arming/AP_Arming.cpp b/libraries/AP_Arming/AP_Arming.cpp
index a2fa77d6e0..0b6ae786a2 100644
--- a/libraries/AP_Arming/AP_Arming.cpp
+++ b/libraries/AP_Arming/AP_Arming.cpp
@@ -1244,6 +1244,7 @@ bool AP_Arming::can_checks(bool report)
                 case AP_CAN::Protocol::TOFSenseP:
                 case AP_CAN::Protocol::NanoRadar_NRA24:
                 case AP_CAN::Protocol::Benewake:
+                case AP_CAN::Protocol::MR72:
                 {
                     for (uint8_t j = i; j; j--) {
                         if (AP::can().get_driver_type(i) == AP::can().get_driver_type(j-1)) {