diff --git a/extra/boids/boids.factor b/extra/boids/boids.factor
index d8e62b9bf3..665488d62d 100644
--- a/extra/boids/boids.factor
+++ b/extra/boids/boids.factor
@@ -31,7 +31,7 @@ CONSTANT: initial-dt 5
         initial-behaviours >>behaviours
         initial-dt >>dt ;
 
-M:  boids-gadget ungraft*
+M: boids-gadget ungraft*
     t >>paused drop ;
 
 : vec>deg ( vec -- deg )