diff --git a/src/js/net/minecraft/client/render/BlockRenderer.js b/src/js/net/minecraft/client/render/BlockRenderer.js
index 3ecdc3c..32e30ec 100644
--- a/src/js/net/minecraft/client/render/BlockRenderer.js
+++ b/src/js/net/minecraft/client/render/BlockRenderer.js
@@ -47,7 +47,7 @@ window.BlockRenderer = class {
 
         // Classic lightning
         if (BlockRenderer.CLASSIC_LIGHTNING) {
-            let brightness = 0.9 / 15.0 * 15 + 0.1;
+            let brightness = 0.9 / 15.0 * world.getLightAt(minX + face.x, minY + face.y, minZ + face.z) + 0.1;
             let color = brightness * face.getShading();
             this.tessellator.setColor(color, color, color);
         }