diff --git a/pathtracer/examples/scene.yaml b/pathtracer/examples/scene.yaml
index d65f02b..90e79d3 100644
--- a/pathtracer/examples/scene.yaml
+++ b/pathtracer/examples/scene.yaml
@@ -1,5 +1,6 @@
 aliasing_limit: 10
 reflection_limit: 5
+background: {r: 0.5, g: 0.5, b: 0.5}
 
 camera:
   origin: [-1.0, 0.0, 0.0]