diff --git a/leenkx/Shaders/std/shadows.glsl b/leenkx/Shaders/std/shadows.glsl
index 39620fa..d994eff 100644
--- a/leenkx/Shaders/std/shadows.glsl
+++ b/leenkx/Shaders/std/shadows.glsl
@@ -88,7 +88,7 @@ float lpToDepth(vec3 lp, const vec2 lightProj) {
 }
 
 #ifndef _ShadowMapAtlas
-vec3 PCFCube(samplerCubeShadow shadowMapCube, samplerCube shadowMapCubeTransparent, vec3 lp, vec3 ml, float bias, vec2 lightProj, vec3 n, bool transparent) {
+vec3 PCFCube(samplerCubeShadow shadowMapCube, samplerCube shadowMapCubeTransparent, vec3 lp, vec3 ml, float bias, vec2 lightProj, vec3 n, const bool transparent) {
     const float s = shadowmapCubePcfSize;
     float compare = lpToDepth(lp, lightProj) - bias * 1.5;
     ml = ml + n * bias * 20;