diff --git a/tutorial_raycasting.md b/tutorial_raycasting.md
index 4a0a44f..2cd5664 100644
--- a/tutorial_raycasting.md
+++ b/tutorial_raycasting.md
@@ -87,9 +87,11 @@ extends KinematicBody2D
 
 func _fixed_process(delta):
     var space_state = get_world().get_direct_space_state()
-    var result = space_state.intersect_ray( get_global_pos(), enemy_pos, [ get_rid() ] )
+    var result = space_state.intersect_ray( get_global_pos(), enemy_pos, [ self ] )
 ```
 
+The extra argument is a list of exceptions, can be objects (need Godot 1.1beta2+ for this) or RIDs.
+
 ### 3D Ray Casting From Screen
 
 Casting a ray from screen to 3D physics space is useful for object picking. There is not much of a need to do this because [CollisionObject](class_collisionobject) has an "input_event" signal that will let you know when it was clicked, but in case there is any desire to do it manually, here's how.