diff --git a/libraries/GCS_MAVLink/GCS_Common.cpp b/libraries/GCS_MAVLink/GCS_Common.cpp
index ce54ee97f2..4edfe4c54b 100644
--- a/libraries/GCS_MAVLink/GCS_Common.cpp
+++ b/libraries/GCS_MAVLink/GCS_Common.cpp
@@ -3592,10 +3592,10 @@ MAV_RESULT GCS_MAVLINK::handle_command_preflight_can(const mavlink_command_long_
                     can_exists = true;
                     result = ap_kdecan->run_enumeration(start_stop) && result;
                 }
-                break;
 #else
                 UNUSED_RESULT(start_stop); // prevent unused variable error
 #endif
+                break;
             }
             case AP_BoardConfig_CAN::Protocol_Type_PiccoloCAN:
                 // TODO - Run PiccoloCAN pre-flight checks here