diff --git a/src/modules/mavlink/mavlink_messages.cpp b/src/modules/mavlink/mavlink_messages.cpp
index e0a148b53c..aff1aa929c 100644
--- a/src/modules/mavlink/mavlink_messages.cpp
+++ b/src/modules/mavlink/mavlink_messages.cpp
@@ -554,7 +554,7 @@ protected:
 						 heading,
 						 throttle,
 						 pos.alt,
-						 pos.vel_d);
+						 -pos.vel_d);
 		}
 	}
 };