diff --git a/ArduSub/ArduSub.cpp b/ArduSub/ArduSub.cpp
index 8a17ac578b..f382a8f26c 100644
--- a/ArduSub/ArduSub.cpp
+++ b/ArduSub/ArduSub.cpp
@@ -135,6 +135,8 @@ void Sub::fast_loop()
     if (should_log(MASK_LOG_ANY)) {
         Log_Sensor_Health();
     }
+
+    AP_Vehicle::fast_loop();
 }
 
 // 50 Hz tasks