diff --git a/fyrox-impl/src/renderer/observer.rs b/fyrox-impl/src/renderer/observer.rs
index 607c6d9be..aacdd5373 100644
--- a/fyrox-impl/src/renderer/observer.rs
+++ b/fyrox-impl/src/renderer/observer.rs
@@ -152,6 +152,7 @@ impl ObserversCollection {
     }
 }
 
+/// The data used by the renderer when it's rendering a reflection probe.
 pub struct ReflectionProbeData {
     /// Cube map face of a cube render target to which to render a scene.
     pub cube_map_face: CubeMapFace,