diff --git a/src/materials/point-cloud-material.ts b/src/materials/point-cloud-material.ts
index b6dc7fb..146a09d 100644
--- a/src/materials/point-cloud-material.ts
+++ b/src/materials/point-cloud-material.ts
@@ -335,6 +335,9 @@ export class PointCloudMaterial extends RawShaderMaterial {
       define('use_clip_box');
     }
 
+    define('MAX_POINT_LIGHTS 0');
+    define('MAX_DIR_LIGHTS 0');
+
     parts.push(shaderSrc);
 
     return parts.join('\n');