diff --git a/leenkx/Shaders/voxel_resolve_diffuse/voxel_resolve_diffuse.comp.glsl b/leenkx/Shaders/voxel_resolve_diffuse/voxel_resolve_diffuse.comp.glsl
index 75d5c3d..a605d79 100644
--- a/leenkx/Shaders/voxel_resolve_diffuse/voxel_resolve_diffuse.comp.glsl
+++ b/leenkx/Shaders/voxel_resolve_diffuse/voxel_resolve_diffuse.comp.glsl
@@ -106,8 +106,11 @@ void main() {
 #ifdef _Brdf
 	vec2 envBRDF = texelFetch(senvmapBrdf, ivec2(vec2(dotNV, 1.0 - roughness) * 256.0), 0).xy;
 	vec3 F = f0 * envBRDF.x + envBRDF.y;
+#else
+	vec3 F = f0;
 #endif
 
+
 	// Envmap
 #ifdef _Irr
 	vec4 shPacked[7];