diff --git a/libraries/GCS_MAVLink/GCS.cpp b/libraries/GCS_MAVLink/GCS.cpp
index 035e8787c7..83b860b532 100644
--- a/libraries/GCS_MAVLink/GCS.cpp
+++ b/libraries/GCS_MAVLink/GCS.cpp
@@ -4,6 +4,7 @@
 #include <AP_Logger/AP_Logger.h>
 #include <AP_BattMonitor/AP_BattMonitor.h>
 #include <AP_Scheduler/AP_Scheduler.h>
+#include <AP_Baro/AP_Baro.h>
 
 extern const AP_HAL::HAL& hal;
 
diff --git a/libraries/GCS_MAVLink/GCS_Common.cpp b/libraries/GCS_MAVLink/GCS_Common.cpp
index c4df62857f..1eddee96ec 100644
--- a/libraries/GCS_MAVLink/GCS_Common.cpp
+++ b/libraries/GCS_MAVLink/GCS_Common.cpp
@@ -33,6 +33,7 @@
 #include <AP_Common/AP_FWVersion.h>
 #include <AP_VisualOdom/AP_VisualOdom.h>
 #include <AP_OpticalFlow/OpticalFlow.h>
+#include <AP_Baro/AP_Baro.h>
 
 #include "GCS.h"