diff --git a/ArduSub/system.cpp b/ArduSub/system.cpp
index 84293f5574..8a72e31ca6 100644
--- a/ArduSub/system.cpp
+++ b/ArduSub/system.cpp
@@ -66,6 +66,8 @@ void Sub::init_ardupilot()
     g2.gripper.init();
 #endif
 
+    fence.init();
+
     // initialise notify system
     notify.init();