diff --git a/libraries/AP_TECS/AP_TECS.cpp b/libraries/AP_TECS/AP_TECS.cpp
index c25eb5c532..dc01a51144 100644
--- a/libraries/AP_TECS/AP_TECS.cpp
+++ b/libraries/AP_TECS/AP_TECS.cpp
@@ -1,5 +1,6 @@
 #include "AP_TECS.h"
 #include <AP_HAL/AP_HAL.h>
+#include <AP_Baro/AP_Baro.h>
 
 extern const AP_HAL::HAL& hal;