diff --git a/src/renderer.rs b/src/renderer.rs
index c4dcf2b..26c3889 100644
--- a/src/renderer.rs
+++ b/src/renderer.rs
@@ -500,7 +500,8 @@ fn trace_camera_light_path(
                 .background_color
                 .to_spectral_sample(ray.wavelength)
                 .e
-                * mis_pdf;
+                * attenuation
+                / mis_pdf;
 
             break;
         }