diff --git a/ArduSub/GCS_Mavlink.cpp b/ArduSub/GCS_Mavlink.cpp
index 52989b4ac8ed8..c673786b9a143 100644
--- a/ArduSub/GCS_Mavlink.cpp
+++ b/ArduSub/GCS_Mavlink.cpp
@@ -107,7 +107,8 @@ void GCS_MAVLINK_Sub::send_scaled_pressure3()
         AP_HAL::millis(),
         0,
         0,
-        sub.celsius.temperature() * 100);
+        sub.celsius.temperature() * 100,
+        0); // TODO: use differential pressure temperature
 }
 
 bool GCS_MAVLINK_Sub::send_info()