diff --git a/goal_src/jak3/engine/level/region.gc b/goal_src/jak3/engine/level/region.gc
index 6fb86168d7..60907eb9ce 100644
--- a/goal_src/jak3/engine/level/region.gc
+++ b/goal_src/jak3/engine/level/region.gc
@@ -478,6 +478,7 @@
 
 (defun region-tree-execute ((arg0 symbol) (arg1 vector) (arg2 vector))
   (let ((sv-32 (vector-average! (new 'stack-no-clear 'vector) arg1 arg2)))
+    (set! (-> sv-32 w) (* 0.5 (vector-vector-distance arg1 arg2)))
     ;; og:preserve-this
     (set! (-> (scratchpad-object region-prim-area) region-prim-list num-items) 0)
     (set! (-> (scratchpad-object region-prim-area) region-enter-count) 0)