diff --git a/include/assimp/light.h b/include/assimp/light.h
index ec0c20ec5..c1d674bd6 100644
--- a/include/assimp/light.h
+++ b/include/assimp/light.h
@@ -77,6 +77,7 @@ enum aiLightSourceType
 
 	//! The generic light level of the world, including the bounces
 	//! of all other lightsources.
+	//! Typically, there's at most one ambient light in a scene.
 	//! This light type doesn't have a valid position, direction, or
 	//! other properties, just a color. 
 	aiLightSource_AMBIENT       = 0x4,