diff --git a/libraries/model/src/model/Light.slh b/libraries/model/src/model/Light.slh
index d743da81b7..6529da1b61 100644
--- a/libraries/model/src/model/Light.slh
+++ b/libraries/model/src/model/Light.slh
@@ -25,7 +25,7 @@ struct SphericalHarmonics {
 
 vec4 evalSphericalLight(SphericalHarmonics sh, vec3 direction ) {
 
-    vec3 dir = direction.xyz; // we don;t understand why yet but we need to use z as vertical axis?
+    vec3 dir = direction.xyz;
 
     const float C1 = 0.429043;
     const float C2 = 0.511664;