diff --git a/msg/position_setpoint.msg b/msg/position_setpoint.msg
index 9648a370cd..6c06f9138c 100644
--- a/msg/position_setpoint.msg
+++ b/msg/position_setpoint.msg
@@ -34,4 +34,5 @@ float32 a_y			# acceleration y setpoint
 float32 a_z			# acceleration z setpoint
 bool acceleration_valid		# true if acceleration setpoint is valid/should be used
 bool acceleration_is_force	# interprete acceleration as force
-float32 acceptance_radius   # navigation acceptance_radius if we're doint waypoint navigation
+float32 acceptance_radius   # navigation acceptance_radius if we're doing waypoint navigation
+float32 cruising_speed		# the generally desired cruising speed (not a hard constraint)