diff --git a/spf/mavlink/mavlink_controller.py b/spf/mavlink/mavlink_controller.py
index f8cf52a3..1912fbda 100644
--- a/spf/mavlink/mavlink_controller.py
+++ b/spf/mavlink/mavlink_controller.py
@@ -238,6 +238,7 @@ def __init__(
 
         self.planner_started_moving = False
         self.last_heartbeat_log = None
+        self.armed = False
         # self.mission_item_condition = threading.Condition()
         # self.mission_item_reached = False