diff --git a/files/shaders/shadows_fragment.glsl b/files/shaders/shadows_fragment.glsl
index ce9e958d1..220e00efa 100644
--- a/files/shaders/shadows_fragment.glsl
+++ b/files/shaders/shadows_fragment.glsl
@@ -16,12 +16,13 @@ float unshadowedLightRatio()
         @foreach shadow_texture_unit_index @shadow_texture_unit_list
             if (!doneShadows)
             {
-                vec2 shadowXY = shadowSpaceCoords@shadow_texture_unit_index.xy / shadowSpaceCoords@shadow_texture_unit_index.w;
+                vec3 shadowXYZ = shadowSpaceCoords@shadow_texture_unit_index.xyz / shadowSpaceCoords@shadow_texture_unit_index.w;
+                vec2 shadowXY = shadowXYZ.xy;
                 if (all(lessThan(shadowXY, vec2(1.0, 1.0))) && all(greaterThan(shadowXY, vec2(0.0, 0.0))))
                 {
                     shadowing = min(shadow2DProj(shadowTexture@shadow_texture_unit_index, shadowSpaceCoords@shadow_texture_unit_index).r, shadowing);
 
-                    if (all(lessThan(shadowXY, vec2(0.95, 0.95))) && all(greaterThan(shadowXY, vec2(0.05, 0.05))))
+                    if (all(lessThan(shadowXYZ, vec3(0.95, 0.95, 1.0))) && all(greaterThan(shadowXYZ, vec3(0.05, 0.05, 0.0))))
                         doneShadows = true;
                 }
             }