diff --git a/libraries/entities-renderer/src/polyvox.slf b/libraries/entities-renderer/src/polyvox.slf
index f08728dbcb..3456823081 100644
--- a/libraries/entities-renderer/src/polyvox.slf
+++ b/libraries/entities-renderer/src/polyvox.slf
@@ -39,7 +39,6 @@
     <@endif@>
     layout(location=RENDER_UTILS_ATTR_POSITION_MS) in vec3 _positionMS;
     layout(location=RENDER_UTILS_ATTR_NORMAL_WS) in vec3 _normalWS;
-    layout(location=RENDER_UTILS_ATTR_NORMAL_MS) in vec3 _normalMS;
 
     LAYOUT(binding=ENTITIES_TEXTURE_POLYVOX_XMAP) uniform sampler2D xMap;
     LAYOUT(binding=ENTITIES_TEXTURE_POLYVOX_YMAP) uniform sampler2D yMap;
@@ -81,7 +80,7 @@ void main(void) {
     vec4 xzDiffuse = texture(yMap, vec2(-inPositionX, inPositionZ));
     vec4 yzDiffuse = texture(zMap, vec2(inPositionZ, -inPositionY));
 
-    vec3 normalMS = normalize(_normalMS);
+    vec3 normalMS = normalize(cross(dFdy(_positionMS.xyz), dFdx(_positionMS.xyz)));
     vec3 xyDiffuseScaled = xyDiffuse.rgb * abs(normalMS.z);
     vec3 xzDiffuseScaled = xzDiffuse.rgb * abs(normalMS.y);
     vec3 yzDiffuseScaled = yzDiffuse.rgb * abs(normalMS.x);
diff --git a/libraries/entities-renderer/src/polyvox.slv b/libraries/entities-renderer/src/polyvox.slv
index 82ae741888..34547cef1a 100644
--- a/libraries/entities-renderer/src/polyvox.slv
+++ b/libraries/entities-renderer/src/polyvox.slv
@@ -24,7 +24,6 @@
     <@endif@>
     layout(location=RENDER_UTILS_ATTR_POSITION_MS) out vec3 _positionMS;
     layout(location=RENDER_UTILS_ATTR_NORMAL_WS) out vec3 _normalWS;
-    layout(location=RENDER_UTILS_ATTR_NORMAL_MS) out vec3 _normalMS;
 <@endif@>
 
 void main(void) {
@@ -41,7 +40,6 @@ void main(void) {
     <@endif@>
 
     <$transformModelToWorldDir(cam, obj, inNormal.xyz, _normalWS)$>
-    _normalMS = inNormal.xyz;
     _positionMS = inPosition.xyz;
 <@endif@>
 <@if HIFI_USE_FADE@>