diff --git a/Assets/brdf.png b/Assets/brdf.png
index cb762549..0c418b6d 100755
Binary files a/Assets/brdf.png and b/Assets/brdf.png differ
diff --git a/Assets/brdf_orig.png b/Assets/brdf_orig.png
new file mode 100644
index 00000000..cb762549
Binary files /dev/null and b/Assets/brdf_orig.png differ
diff --git a/Shaders/deferred_indirect/deferred_indirect.frag.glsl b/Shaders/deferred_indirect/deferred_indirect.frag.glsl
index df566067..ea548461 100644
--- a/Shaders/deferred_indirect/deferred_indirect.frag.glsl
+++ b/Shaders/deferred_indirect/deferred_indirect.frag.glsl
@@ -80,6 +80,7 @@ void main() {
 	float dotNV = max(dot(n, v), 0.0);
 	vec3 f0 = surfaceF0(g1.rgb, metrough.x);
 	vec2 envBRDF = texture(senvmapBrdf, vec2(metrough.y, 1.0 - dotNV)).xy;
+	// vec2 envBRDF = texture(senvmapBrdf, vec2(dotNV, metrough.y)).xy;
 #endif
 
 #ifdef _VoxelGI
diff --git a/blender/arm/material/make_voxel.py b/blender/arm/material/make_voxel.py
index 810fba0e..6b4ea5c8 100644
--- a/blender/arm/material/make_voxel.py
+++ b/blender/arm/material/make_voxel.py
@@ -63,6 +63,7 @@ def make(context_id):
     # frag.write('float opacity;') #
     frag.write_pre = True
     frag.write('mat3 TBN;') # TODO: discard, parse basecolor only
+    frag.write('vec3 n;')
     frag.write_pre = False
     frag.write('float dotNV = 0.0;')
     frag.write('float dotNL = max(dot(wnormal, l), 0.0);')