diff --git a/shader/cloudshader.cpp b/shader/cloudshader.cpp
index 2f0e120..11a8160 100644
--- a/shader/cloudshader.cpp
+++ b/shader/cloudshader.cpp
@@ -122,7 +122,7 @@ Color CloudShader::transparency(const Scene &scene, const Ray &ray, float maxLen
     cloudRay.primitive = nullptr;
 
     // Get out of cloud primitive first
-    if (!ray.primitive->intersect(cloudRay) || cloudRay.length == INFINITY || cloudRay.length <= 0)
+    if (ray.primitive != nullptr && !ray.primitive->intersect(cloudRay) || cloudRay.length == INFINITY || cloudRay.length <= 0)
     {
         // Something went wrong
         return Color(1, 1, 1);