diff --git a/src/render/filament/core/renderable.h b/src/render/filament/core/renderable.h
index adf7cecc..8cd41ed5 100644
--- a/src/render/filament/core/renderable.h
+++ b/src/render/filament/core/renderable.h
@@ -37,6 +37,8 @@
 namespace mujoco {
 
 enum LayerMask : uint8_t {
+  // Filament's Skybox occupies layer 0 by default; renderables use the rest.
+  kLayerMask_Skybox = 0x01 << 0,
   kLayerMask_Object = 0x01 << 1,
   kLayerMask_Decor = 0x01 << 2,
   kLayerMask_Outline = 0x01 << 3,
diff --git a/src/render/filament/core/scene_view.cc b/src/render/filament/core/scene_view.cc
index 35748f49..9dd4970f 100644
--- a/src/render/filament/core/scene_view.cc
+++ b/src/render/filament/core/scene_view.cc
@@ -152,7 +152,7 @@ SceneView::SceneView(ObjectManager* object_mgr, MaterialManager* material_mgr,
   reflect_view_->setShadowingEnabled(false);
   reflect_view_->setPostProcessingEnabled(false);
   reflect_view_->setFrontFaceWindingInverted(true);
-  reflect_view_->setVisibleLayers(0xff, kLayerMask_Object);
+  reflect_view_->setVisibleLayers(0xff, kLayerMask_Object | kLayerMask_Skybox);
   reflect_view_->setMultiSampleAntiAliasingOptions({.enabled = false});
 
   // Rotate the fog to align with mujoco's +Z up space.