diff --git a/src/Scene/Renderer.hs b/src/Scene/Renderer.hs
index af69bd2..fff1aeb 100644
--- a/src/Scene/Renderer.hs
+++ b/src/Scene/Renderer.hs
@@ -205,9 +205,10 @@ intersect r@(Ray ro rd) m@(M (Mesh s _ v f vn fn b)) = case catMaybes . elems $
                             det2 =    det2v ^. _x >= 0 && det2v ^. _y >= 0
                                    && det2v ^. _x + det2v ^. _y <= 1
                             vns = normalize $
-                                  (0.5 - sqrt ((sqr (det2v ^. _x) + sqr (det2v ^. _y))/2)) *^ (vnorm IM.! w1)
-                                + ((det2v ^. _y)/2) *^ (vnorm IM.! w2)
-                                + ((det2v ^. _x)/2) *^ (vnorm IM.! w3)
+                                  --(0.5 - sqrt ((sqr (det2v ^. _x) + sqr (det2v ^. _y))/2)) *^ (vnorm IM.! w1)
+                                  (1 - det2v ^. _x - det2v ^. _y) *^ (vnorm IM.! w1)
+                                + ((det2v ^. _x)/2) *^ (vnorm IM.! w2)
+                                + ((det2v ^. _y)/2) *^ (vnorm IM.! w3)
                             sqr = \x -> x * x